KSZ8863MLL скачать даташит

KSZ8863MLL скачать даташит

KSZ8863MLL/FLL/RLL

Integrated 3-Port 10/100 Managed

Switch with PHYs

Rev. 1.4

General Description

The KSZ8863MLL/FLL/RLL are highly integrated 3-port switch on a chip ICs in industry’s smallest footprint. They are designed to enable a new generation of low port count, cost-sensitive and power efficient 10/100Mbps switch systems. Low power consumption, advanced power management and sophisticated QoS features

(e.g., IPv6 priority classification support) make these devices ideal for IPTV, IP-STB, VoIP, automotive and industrial applications.

The KSZ8863 family is designed to support the GREEN requirement in today’s switch systems. Advanced power management schemes include software power down, per port power down and the energy detect mode that shuts downs the transceiver when a port is idle.

The configurations provided by the KSZ8863 family enables the flexibility to meet requirements of different applications:

• KSZ8863MLL: Two 10/100BASE-T/TX transceivers and one MII interface.

• KSZ8863RLL: Two 10/100BASE-T/TX transceivers and one RMII interface.

• KSZ8863FLL: One 100BASE-FX, one

10/100BASE-T/TX transceivers and one MII interface.

The device is available in RoHS-compliant 48-pin LQFP package. Industrial-grade and Automotive-grade are also available.

KSZ8863MLL/FLL/RLL also offer a by-pass mode, which enables system-level power saving. In this mode, the processor connected to the switch through the MII interface can be shut down without impacting the normal switch operation.

The datasheets and supporting documents can be found at Micrel’s web site at: www.micrel.com

.

__________________________________________________________________________________________________________

Functional Diagram

LinkMD is a registered trademark of Micrel, Inc.

Product names used in this datasheet are for identification purposes only and may be trademarks of their respective companies.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

408

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

September 2011 M9999-092111-1.4

Micrel, Inc.

Features

Advanced Switch Features

-

IEEE 802.1q VLAN support for up to 16 groups

(full-range of VLAN IDs)

-

VLAN ID tag/untag options, per port basis

-

IEEE 802.1p/q tag insertion or removal on a per port basis (egress)

-

Programmable rate limiting at the ingress and egress on a per port basis

-

Broadcast storm protection with % control

(global and per port basis)

-

IEEE 802.1d rapid spanning tree protocol support

-

tail tag mode (1 byte added before FCS) support at port3 to inform the processor which ingress port receives the packet and its priority

-

Bypass feature which Automatically sustains the switch function between Port1 and Port2 when

CPU (Port 3 interface) goes to the sleep mode

-

Self-address

-

Individual MAC address for port1 and port2

-

Support RMII interface and 50 MHz reference clock output

-

IGMP snooping (Ipv4) support for multicast packet Filtering

-

IPv4/IPv6 QoS support.

-

MAC filtering function to forward unknown unicast packets to specified port

Comprehensive Configuration Register Access

-

Serial management interface (SMI) to all internal registers

-

MII management (MIIM) interface to PHY registers

-

High speed SPI and I registers

2

C Interface to all internal

-

I/0 pins strapping and EEPROM to program selective registers in unmanaged switch mode

-

Control registers configurable on the fly (portpriority, 802.1p/d/q, AN…)

QoS/CoS Packet Prioritization Support

-

Per port, 802.1p and DiffServ-based

-

Re-mapping of 802.1p priority field per port basis Four priority levels

Proven Integrated 3-Port 10/100 Ethernet Switch

-

3rd generation switch with three MACs and two

PHYs fully compliant with IEEE 802.3u standard

-

Non-blocking switch fabric assures fast packet delivery by utilizing an 1K MAC address lookup table and a store-and-forward architecture

September 2011 2

KSZ8863MLL/FLL//RLL

-

Full duplex IEEE 802.3x flow control (PAUSE) with force mode option

-

Half-duplex back pressure flow control

-

HP Auto MDI-X for reliable detection of and correction for straight-through and crossover cables with disable and enable option

-

Micre

®

TDR-based cable diagnostics permit identification of faulty copper cabling

-

MII interface supports both MAC mode and PHY mode

-

Comprehensive LED Indicator support for link, activity, full/half duplex and 10/100 speed

-

HBM ESD Rating 4kV

Switch Monitoring Features

-

Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port or MII

-

MIB counters for fully compliant statistics gathering 34 MIB counters per port

-

Loopback modes for remote diagnostic of failure

Low Power Dissipation

-

Full-chip hardware power-down (register configuration not saved)

-

Full-chip software power-down (register configuration not saved)

-

Energy-detect mode support

-

Dynamic clock tree shutdown feature

-

Per port based software power-save on PHY

(idle link detection, register configuration preserved)

-

Voltages: Single 3.3V supply with internal 1.8V

LDO for 3.3V VDDIO

-

Optional 3.3V, 2.5V and 1.8V for VDDIO

-

Transceiver power 3.3V for VDDA_3.3

Industrial Temperature Range: –40

o

C to +85 o

C

Available in 48-Pin LQFP, Lead-free package

Applications

• Typical

-

VoIP

-

Set-top/Game

-

Automotive

-

Industrial

-

IPTV

-

SOHO Gateway

-

Broadband Gateway / Firewall / VPN

-

Integrated DSL/Cable Modem

-

Wireless LAN access point + gateway

-

Standalone 10/100 switch

M9999-092111-1.4

Micrel, Inc.

Ordering Information

Part Number

KSZ8863MLL

KSZ8863MLLI

KSZ8863FLL

KSZ8863FLLI

KSZ8863RLL

KSZ8863RLLI

Revision History

Junction

Temperature Range

0ºC to 70ºC

–40ºC to +85ºC

0ºC to 70ºC

–40ºC to +85ºC

0ºC to 70ºC

–40ºC to +85ºC

48-Pin LQFP

48-Pin LQFP

48-Pin LQFP

48-Pin LQFP

48-Pin LQFP

48-Pin LQFP

Pb-Free/Commercial

Pb-Free/Industrial

Pb-Free/Commercial

Pb-Free/Industrial

Pb-Free/Commercial

Pb-Free/Industrial

Revision Date Summary of Changes

1.0 07/10/08 release

1.1

09/23/09

Update the Electrical Characteristics.

Add LinkMD feature on Port 2.

Fix the typo on register 194

10/01/09 Modify pin 28(SMRXD31) description

Remove Turbo MII feature and its timing, add MDC/MDIO timing, update the descriptions of the by-pass mode, tag insertion, power management, pins, registers and so on. Update max rating, RMII timing and electrical characteristics.

Add the descriptions of the registers from register 175-186. Add a note for port register control 12, update the description for some registers, update reset timing diagram. junction thermal data and lead temperature.

KSZ8863MLL/FLL//RLL

September 2011 3 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Contents

Functional Diagram............................................................................................................................................................... 1

Applications........................................................................................................................................................................... 2

Pin Description and I/O Assignment................................................................................................................................. 11

Pin Configuration ................................................................................................................................................................ 16

Functional Description ....................................................................................................................................................... 17

Functional Overview: Physical Layer Transceiver .......................................................................................................... 17

100BASE-TX Transmit ..................................................................................................................................................... 17

100BASE-TX Receive ...................................................................................................................................................... 17

PLL Clock Synthesizer...................................................................................................................................................... 17

Scrambler/De-scrambler (100BASE-TX Only) ................................................................................................................. 17

100BASE-FX Operation.................................................................................................................................................... 17

100BASE-FX Signal Detection ......................................................................................................................................... 18

100BASE-FX Far-End Fault ............................................................................................................................................. 18

10BASE-T Transmit.......................................................................................................................................................... 18

10BASE-T Receive........................................................................................................................................................... 18

MDI/MDI-X Auto Crossover .............................................................................................................................................. 18

Straight Cable ............................................................................................................................................................ 19

Crossover Cable ........................................................................................................................................................ 20

Auto-Negotiation ............................................................................................................................................................... 21

LinkMD

®

Cable Diagnostics.............................................................................................................................................. 22

Access ....................................................................................................................................................................... 22

Usage......................................................................................................................................................................... 22

Functional Overview: Power Management....................................................................................................................... 22

Normal Operation Mode ................................................................................................................................................... 23

Energy Detect Mode ......................................................................................................................................................... 23

Soft Power Down Mode .................................................................................................................................................... 23

Power Saving Mode.......................................................................................................................................................... 23

Port based Power Down Mode......................................................................................................................................... 23

Functional Overview: MAC and Switch ............................................................................................................................ 24

Address Lookup................................................................................................................................................................ 24

Learning ............................................................................................................................................................................ 24

Migration ........................................................................................................................................................................... 24

Aging................................................................................................................................................................................. 24

Forwarding........................................................................................................................................................................ 24

Switching Engine .............................................................................................................................................................. 27

MAC Operation ................................................................................................................................................................. 27

Inter Packet Gap (IPG) .............................................................................................................................................. 27

Back-Off Algorithm..................................................................................................................................................... 27

Late Collision ............................................................................................................................................................. 27

Illegal Frames ............................................................................................................................................................ 27

Full Duplex Flow Control............................................................................................................................................ 27

Half-Duplex Backpressure ......................................................................................................................................... 27

Broadcast Storm Protection....................................................................................................................................... 28

Port Individual MAC address and Source Port Filtering ............................................................................................ 28

MII Interface Operation ..................................................................................................................................................... 28

RMII Interface Operation .................................................................................................................................................. 29

MII Management (MIIM) Interface .................................................................................................................................... 31

Serial Management Interface (SMI).................................................................................................................................. 32

Advanced Switch Functions .............................................................................................................................................. 32

Bypass Mode .................................................................................................................................................................... 32

IEEE 802.1Q VLAN Support............................................................................................................................................. 32

QoS Priority Support......................................................................................................................................................... 33

Port-Based Priority..................................................................................................................................................... 33

802.1p-Based Priority ................................................................................................................................................ 33

September 2011 4 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

DiffServ-Based Priority .............................................................................................................................................. 34

Spanning Tree Support..................................................................................................................................................... 34

Rapid Spanning Tree Support .......................................................................................................................................... 35

Tail Tagging Mode ............................................................................................................................................................ 36

IGMP Support ................................................................................................................................................................... 37

IGMP Snooping ......................................................................................................................................................... 37

IGMP Send Back to the Subscribed Port .................................................................................................................. 37

Port Mirroring Support ...................................................................................................................................................... 37

Rate Limiting Support ....................................................................................................................................................... 37

Unicast MAC Address Filtering......................................................................................................................................... 38

Configuration Interface ..................................................................................................................................................... 38

2

I

C Master Serial Bus Configuration .......................................................................................................................... 38

I2C Slave Serial Bus Configuration ........................................................................................................................... 39

SPI Slave Serial Bus Configuration ........................................................................................................................... 39

Loopback Support............................................................................................................................................................. 42

Far-end Loopback...................................................................................................................................................... 42

Near-end (Remote) Loopback ................................................................................................................................... 43

MII Management (MIIM) Registers ..................................................................................................................................... 44

PHY1 Register 0 (PHYAD = 0x1, REGAD = 0x0): MII Basic Control........................................................................ 45

PHY2 Register 0 (PHYAD = 0x2, REGAD = 0x0): MII Basic Control........................................................................ 45

PHY1 Register 1 (PHYAD = 0x1, REGAD = 0x1): MII Basic Status ......................................................................... 46

PHY2 Register 1 (PHYAD = 0x2, REGAD = 0x1): MII Basic Status ......................................................................... 46

PHY1 Register 2 (PHYAD = 0x1, REGAD = 0x2): PHYID High................................................................................ 46

PHY2 Register 2 (PHYAD = 0x2, REGAD = 0x2): PHYID High................................................................................ 46

PHY1 Register 3 (PHYAD = 0x1, REGAD = 0x3): PHYID Low................................................................................. 46

PHY2 Register 3 (PHYAD = 0x2, REGAD = 0x3): PHYID Low................................................................................. 46

PHY1 Register 4 (PHYAD = 0x1, REGAD = 0x4): Auto-Negotiation Advertisement Ability ..................................... 47

PHY2 Register 4 (PHYAD = 0x2, REGAD = 0x4): Auto-Negotiation Advertisement Ability ..................................... 47

PHY1 Register 5 (PHYAD = 0x1, REGAD = 0x5): Auto-Negotiation Link Partner Ability ......................................... 47

PHY2 Register 5 (PHYAD = 0x2, REGAD = 0x5): Auto-Negotiation Link Partner Ability ......................................... 47

PHY1 Register 29 (PHYAD = 0x1, REGAD = 0x1D): Not support ............................................................................ 48

PHY2 Register 29 (PHYAD = 0x2, REGAD = 0x1D): LinkMD Control/Status .......................................................... 48

PHY1 Register 31 (PHYAD = 0x1, REGAD = 0x1F): PHY Special Control/Status................................................... 48

PHY2 Register 31 (PHYAD = 0x2, REGAD = 0x1F): PHY Special Control/Status................................................... 48

Memory Map (8-bit Registers)............................................................................................................................................ 49

Global Registers ............................................................................................................................................................... 49

Port Registers ................................................................................................................................................................... 49

Advanced Control Registers ............................................................................................................................................. 49

Register Description ........................................................................................................................................................... 50

Global Registers (Registers 0 – 15) ................................................................................................................................. 50

Register 0 (0x00): Chip ID0 ....................................................................................................................................... 50

Register 1 (0x01): Chip ID1 / Start Switch................................................................................................................. 50

Register 2 (0x02): Global Control 0 ........................................................................................................................... 50

Register 3 (0x03): Global Control 1 ........................................................................................................................... 51

Register 4 (0x04): Global Control 2 ........................................................................................................................... 51

Register 5 (0x05): Global Control 3 ........................................................................................................................... 52

Register 6 (0x06): Global Control 4 ........................................................................................................................... 53

Register 7 (0x07): Global Control 5 ........................................................................................................................... 53

Register 8 (0x08): Global Control 6 ........................................................................................................................... 54

Register 9 (0x09): Global Control 7 ........................................................................................................................... 54

Register 10 (0x0A): Global Control 8......................................................................................................................... 54

Register 11 (0x0B): Global Control 9......................................................................................................................... 54

Register 12 (0x0C): Global Control 10 ...................................................................................................................... 54

Register 13 (0x0D): Global Control 11 ...................................................................................................................... 54

Register 14 (0x0E): Global Control 12....................................................................................................................... 55

Register 15 (0x0F): Global Control 13....................................................................................................................... 55

Port Registers (Registers 16 – 95) ................................................................................................................................... 56

September 2011 5 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Register 16 (0x10): Port 1 Control 0.......................................................................................................................... 56

Register 32 (0x20): Port 2 Control 0.......................................................................................................................... 56

Register 48 (0x30): Port 3 Control 0.......................................................................................................................... 56

Register 17 (0x11): Port 1 Control 1.......................................................................................................................... 57

Register 33 (0x21): Port 2 Control 1.......................................................................................................................... 57

Register 49 (0x31): Port 3 Control 1.......................................................................................................................... 57

Register 18 (0x12): Port 1 Control 2.......................................................................................................................... 57

Register 34 (0x22): Port 2 Control 2.......................................................................................................................... 57

Register 50 (0x32): Port 3 Control 2.......................................................................................................................... 57

Register 19 (0x13): Port 1 Control 3.......................................................................................................................... 58

Register 35 (0x23): Port 2 Control 3.......................................................................................................................... 58

Register 51 (0x33): Port 3 Control 3.......................................................................................................................... 58

Register 20 (0x14): Port 1 Control 4.......................................................................................................................... 58

Register 36 (0x24): Port 2 Control 4.......................................................................................................................... 58

Register 52 (0x34): Port 3 Control 4.......................................................................................................................... 58

Register 21 (0x15): Port 1 Control 5.......................................................................................................................... 58

Register 37 (0x25): Port 2 Control 5.......................................................................................................................... 58

Register 53 (0x35): Port 3 Control 5.......................................................................................................................... 58

Register 22[6:0] (0x16): Port 1 Q0 ingress data rate limit ......................................................................................... 59

Register 38[6:0] (0x26): Port 2 Q0 ingress data rate limit ......................................................................................... 59

Register 54[6:0] (0x36): Port 3 Q0 ingress data rate limit ......................................................................................... 59

Register 23[6:0] (0x17): Port 1 Q1 ingress data rate limit ......................................................................................... 60

Register 39[6:0] (0x27): Port 2 Q1 ingress data rate limit ......................................................................................... 60

Register 55[6:0] (0x37): Port 3 Q1 ingress data rate limit ......................................................................................... 60

Register 24[6:0] (0x18): Port 1 Q2 ingress data rate limit ......................................................................................... 60

Register 40[6:0] (0x28): Port 2 Q2 ingress data rate limit ......................................................................................... 60

Register 56[6:0] (0x38): Port 3 Q2 ingress data rate limit ......................................................................................... 60

Register 25[6:0] (0x19): Port 1 Q3 ingress data rate limit ......................................................................................... 60

Register 41[6:0] (0x29): Port 2 Q3 ingress data rate limit ......................................................................................... 60

Register 57[6:0] (0x39): Port 3 Q3 ingress data rate limit ......................................................................................... 60

Register 26 (0x1A): Port 1 PHY Special Control/Status............................................................................................ 62

Register 42 (0x2A): Port 2 PHY Special Control/Status............................................................................................ 62

Register 58 (0x3A): Reserved, not applied to port 3 ................................................................................................. 62

Register 27 (0x1B): Port 1 Not support ..................................................................................................................... 62

Register 43 (0x2B): Port 2 LinkMD Result................................................................................................................. 62

Register 59 (0x3B): Reserved, not applied to port 3 ................................................................................................. 62

Register 28 (0x1C): Port 1 Control 12 ....................................................................................................................... 63

Register 44 (0x2C): Port 2 Control 12 ....................................................................................................................... 63

Register 60 (0x3C): Reserved, not applied to port 3 ................................................................................................. 63

Register 29 (0x1D): Port 1 Control 13 ....................................................................................................................... 63

Register 45 (0x2D): Port 2 Control 13 ....................................................................................................................... 63

Register 61 (0x3D): Reserved, not applied to port 3 ................................................................................................. 63

Register 30 (0x1E): Port 1 Status 0........................................................................................................................... 64

Register 46 (0x2E): Port 2 Status 0........................................................................................................................... 64

Register 62 (0x3E): Reserved, not applied to port 3 ................................................................................................. 64

Register 31 (0x1F): Port 1 Status 1 ........................................................................................................................... 65

Register 47 (0x2F): Port 2 Status 1 ........................................................................................................................... 65

Register 63 (0x3F): Port 3 Status 1 ........................................................................................................................... 65

Register 67 (0x43): Reset.......................................................................................................................................... 65

Advanced Control Registers (Registers 96-198) .............................................................................................................. 66

Register 96 (0x60): TOS Priority Control Register 0 ................................................................................................. 66

Register 97 (0x61): TOS Priority Control Register 1 ................................................................................................. 66

Register 98 (0x62): TOS Priority Control Register 2 ................................................................................................. 66

Register 99 (0x63): TOS Priority Control Register 3 ................................................................................................. 67

Register 100 (0x64): TOS Priority Control Register 4 ............................................................................................... 67

Register 101 (0x65): TOS Priority Control Register 5 ............................................................................................... 67

Register 102 (0x66): TOS Priority Control Register 6 ............................................................................................... 68

September 2011 6 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Register 103 (0x67): TOS Priority Control Register 7 ............................................................................................... 68

Register 104 (0x68): TOS Priority Control Register 8 ............................................................................................... 68

Register 105 (0x69): TOS Priority Control Register 9 ............................................................................................... 69

Register 106 (0x6A): TOS Priority Control Register 10 ............................................................................................. 69

Register 107 (0x6B): TOS Priority Control Register 11 ............................................................................................. 69

Register 108 (0x6C): TOS Priority Control Register 12............................................................................................. 70

Register 109 (0x6D): TOS Priority Control Register 13............................................................................................. 70

Register 110 (0x6E): TOS Priority Control Register 14 ............................................................................................. 70

Register 111 (0x6F): TOS Priority Control Register 15 ............................................................................................. 71

Registers 112 to 117.................................................................................................................................................. 71

Register 112 (0x70): MAC Address Register 0 ......................................................................................................... 71

Register 113 (0x71): MAC Address Register 1 ......................................................................................................... 71

Register 114 (0x72): MAC Address Register 2 ......................................................................................................... 71

Register 115 (0x73): MAC Address Register 3 ......................................................................................................... 71

Register 116 (0x74): MAC Address Register 4 ......................................................................................................... 71

Register 117 (0x75): MAC Address Register 5 ......................................................................................................... 71

Registers 118 to 120.................................................................................................................................................. 72

Register 118 (0x76): User Defined Register 1........................................................................................................... 72

Register 119 (0x77): User Defined Register 2........................................................................................................... 72

Register 120 (0x78): User Defined Register 3........................................................................................................... 72

Registers 121 to 131.................................................................................................................................................. 72

Register 121 (0x79): Indirect Access Control 0 ......................................................................................................... 72

Register 122 (0x7A): Indirect Access Control 1......................................................................................................... 72

Register 123 (0x7B): Indirect Data Register 8........................................................................................................... 72

Register 124 (0x7C): Indirect Data Register 7........................................................................................................... 73

Register 125 (0x7D): Indirect Data Register 6........................................................................................................... 73

Register 126 (0x7E): Indirect Data Register 5........................................................................................................... 73

Register 127 (0x7F): Indirect Data Register 4 ........................................................................................................... 73

Register 128 (0x80): Indirect Data Register 3 ........................................................................................................... 73

Register 129 (0x81): Indirect Data Register 2 ........................................................................................................... 73

Register 130 (0x82): Indirect Data Register 1 ........................................................................................................... 73

Register 131 (0x83): Indirect Data Register 0 ........................................................................................................... 73

Register 147~142(0x93~0x8E): Station Address 1 MACA1...................................................................................... 73

Register 153~148 (0x99~0x94): Station Address 2 MACA2 ..................................................................................... 73

Register 154[6:0] (0x9A): Port 1 Q0 Egress data rate limit ....................................................................................... 74

Register 158[6:0] (0x9E): Port 2 Q0 Egress data rate limit ....................................................................................... 74

Register 162[6:0] (0xA2): Port 3 Q0 Egress data rate limit ....................................................................................... 74

Register 155[6:0] (0x9B): Port 1 Q1 Egress data rate limit ....................................................................................... 74

Register 159[6:0] (0x9F): Port 2 Q1 Egress data rate limit ....................................................................................... 74

Register 163[6:0] (0xA3): Port 3 Q1 Egress data rate limit ....................................................................................... 74

Register 156[6:0] (0x9C): Port 1 Q2 Egress data rate limit ....................................................................................... 74

Register 160[6:0] (0xA0): Port 2 Q2 Egress data rate limit ....................................................................................... 74

Register 164[6:0] (0xA4): Port 3 Q2 Egress data rate limit ....................................................................................... 74

Register 157[6:0] (0x9D): Port 1 Q3 Egress data rate limit ....................................................................................... 74

Register 161[6:0] (0xA1): Port 2 Q3 Egress data rate limit ....................................................................................... 74

Register 165[6:0] (0xA5): Port 3 Q3 Egress data rate limit ....................................................................................... 74

Register 166 (0xA6): KSZ8863 mode indicator ......................................................................................................... 75

Register 167 (0xA7): High Priority Packet Buffer Reserved for Q3........................................................................... 75

Register 168 (0xA8): High Priority Packet Buffer Reserved for Q2........................................................................... 75

Register 169 (0xA9): High Priority Packet Buffer Reserved for Q1........................................................................... 75

Register 170 (0xAA): High Priority Packet Buffer Reserved for Q0 .......................................................................... 75

Register 171 (0xAB): PM Usage Flow Control Select Mode 1 .................................................................................. 75

Register 172 (0xAC): PM Usage Flow Control Select Mode 2.................................................................................. 75

Register 173 (0xAD): PM Usage Flow Control Select Mode 3.................................................................................. 76

Register 174 (0xAE): PM Usage Flow Control Select Mode 4 .................................................................................. 76

Register 175 (0xAF): TXQ Split for Q3 in Port 1 ....................................................................................................... 76

Register 176 (0xB0): TXQ Split for Q2 in Port 1........................................................................................................ 76

September 2011 7 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Register 177 (0xB1): TXQ Split for Q1 in Port 1........................................................................................................ 76

Register 178 (0xB2): TXQ Split for Q0 in Port 1........................................................................................................ 76

Register 179 (0xB3): TXQ Split for Q3 in Port 2........................................................................................................ 77

Register 180 (0xB4): TXQ Split for Q2 in Port 2........................................................................................................ 77

Register 181 (0xB5): TXQ Split for Q1 in Port 2........................................................................................................ 77

Register 182 (0xB6): TXQ Split for Q0 in Port 2........................................................................................................ 77

Register 183 (0xB7): TXQ Split for Q3 Port 3............................................................................................................ 77

Register 184 (0xB8): TXQ Split for Q2 Port 3............................................................................................................ 77

Register 185 (0xB9): TXQ Split for Q1 in Port 3........................................................................................................ 78

Register 186 (0xBA): TXQ Split for Q0 in Port 3 ....................................................................................................... 78

Register 187 (0xBB): Interrupt enable register .......................................................................................................... 78

Register 188 (0xBC): Link Change Interrupt ............................................................................................................. 78

Register 189 (0xBD): Force Pause Off Iteration Limit Enable................................................................................... 78

Register 192 (0xC0): Fiber Signal Threshold ............................................................................................................ 79

Register 193 (0xC1): Internal 1.8V LDO Control ....................................................................................................... 79

Register 194 (0xC2): Insert SRC PVID ..................................................................................................................... 80

Register 195 (0xC3): Power Management and LED Mode ....................................................................................... 80

Register 196(0xC4): Sleep Mode .............................................................................................................................. 81

Register 198 (0xC6): Forward Invalid VID Frame and Host Mode............................................................................ 81

Static MAC Address Table ................................................................................................................................................. 82

Examples: ......................................................................................................................................................................... 82

VLAN Table .......................................................................................................................................................................... 84

Dynamic MAC Address Table ............................................................................................................................................ 85

MIB (Management Information Base) Counters............................................................................................................... 86

Additional MIB Counter Information........................................................................................................................... 88

Absolute Maximum Ratings

(1)

............................................................................................................................................ 89

Operating Ratings

(2)

............................................................................................................................................................ 89

Electrical Characteristics

(4)

................................................................................................................................................ 89

I

EEPROM Timing .............................................................................................................................................................. 91

MII Timing ......................................................................................................................................................................... 92

RMII Timing....................................................................................................................................................................... 94

2

C Slave Mode Timing ..................................................................................................................................................... 95

SPI Timing ........................................................................................................................................................................ 97

Auto-Negotiation Timing ................................................................................................................................................... 99

MDC/MDIO Timing ......................................................................................................................................................... 100

Reset Timing................................................................................................................................................................... 101

Reset Circuit ................................................................................................................................................................... 102

Selection of Isolation Transformers................................................................................................................................ 103

Selection of Reference Crystal ........................................................................................................................................ 103

Package Information......................................................................................................................................................... 104

September 2011 8 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

List of Figures

48-Pin LQFP (Top View) ..................................................................................................................................................... 16

Figure 1. Typical Straight Cable Connection ....................................................................................................................... 19

Figure 2. Typical Crossover Cable Connection ................................................................................................................... 20

Figure 3. Auto-Negotiation and Parallel Operation .............................................................................................................. 21

Figure 4. Destination Address Lookup Flow Chart, Stage 1................................................................................................ 25

Figure 5. Destination Address Resolution Flow Chart, Stage 2........................................................................................... 26

Figure 6. 802.1p Priority Field Format ................................................................................................................................. 34

Figure 7. Tail Tag Frame Format ......................................................................................................................................... 36

Figure 8. Tail Tag Rules....................................................................................................................................................... 36

Figure 9. EEPROM Configuration Timing Diagram ............................................................................................................. 38

Figure 10. SPI Write Data Cycle .......................................................................................................................................... 40

Figure 11. SPI Read Data Cycle.......................................................................................................................................... 40

Figure 12. SPI Multiple Write ............................................................................................................................................... 41

Figure 13. SPI Multiple Read ............................................................................................................................................... 41

Figure 14. Far-End Loopback Path...................................................................................................................................... 42

Figure 15. Near-end (Remote) Loopback Path.................................................................................................................... 43

Figure 16. EEPROM Interface Input Timing Diagram.......................................................................................................... 91

Figure 17. EEPROM Interface Output Timing Diagram....................................................................................................... 91

Figure 18. MAC Mode MII Timing – Data Received from MII .............................................................................................. 92

Figure 19. MAC Mode MII Timing – Data Transmitted to MII ............................................................................................. 92

Figure 20. PHY Mode MII Timing – Data Received from MII............................................................................................... 93

Figure 21. PHY Mode MII Timing – Data Transmitted to MII............................................................................................... 93

Figure 22. RMII Timing – Data Received from RMII ............................................................................................................ 94

Figure 23. RMII Timing – Data Transmitted to RMII ............................................................................................................ 94

Figure 24. I2C Input Timing.................................................................................................................................................. 95

Figure 25. I2C Start Bit Timing............................................................................................................................................. 95

Figure 28. SPI Input Timing ................................................................................................................................................. 97

Figure 29. SPI Output Timing............................................................................................................................................... 98

Figure 30. Auto-Negotiation Timing ..................................................................................................................................... 99

Figure 31. MDC/MDIO Timing............................................................................................................................................ 100

Figure 32. Reset Timing..................................................................................................................................................... 101

Figure 33. Recommended Reset Circuit............................................................................................................................ 102

Figure 34. Recommended Reset Circuit for interfacing with CPU/FPGA Reset Output.................................................... 102

Figure 35. 48-Pin LQFP (LQ) ............................................................................................................................................. 104

September 2011 9 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

List of Tables

Table 1. FX Signal Threshold............................................................................................................................................... 18

Table 2. MDI/MDI-X Pin Definitions ..................................................................................................................................... 18

Table 3. Internal Function Block Status ................................................................................................................................ 23

Table 4. MII Signals ............................................................................................................................................................. 28

Table 5. RMII Clock Setting .................................................................................................................................................. 29

Table 6. RMII Signal Description.......................................................................................................................................... 30

Table 7. RMII Signal Connections........................................................................................................................................ 30

Table 8. MII Management Interface Frame Format ............................................................................................................. 31

Table 9. Serial Management Interface (SMI) Frame Format ............................................................................................... 32

Table 10. FID+DA Lookup in VLAN Mode ........................................................................................................................... 33

Table 11. FID+SA Lookup in VLAN Mode ........................................................................................................................... 33

Table 12. Spanning Tree States .......................................................................................................................................... 35

Table 13. SPI Connections .................................................................................................................................................. 40

Table 14. Data Rate Limit Table .......................................................................................................................................... 61

Table 16. Format of Static VLAN Table (16 Entries)............................................................................................................ 84

Table 17. Format of Dynamic MAC Address Table (1K Entries) ......................................................................................... 85

Table 18. Format of “Per Port” MIB Counters ...................................................................................................................... 86

Table 19. Port 1’s “Per Port” MIB Counters Indirect Memory Offsets.................................................................................. 87

Table 20. Format of “All Port Dropped Packet” MIB Counters............................................................................................. 87

Table 21. “All Port Dropped Packet” MIB Counters Indirect Memory Offsets...................................................................... 88

Table 22. EEPROM Timing Parameters .............................................................................................................................. 91

Table 23. MAC Mode MII Timing Parameters...................................................................................................................... 92

Table 24. PHY Mode MII Timing Parameters ...................................................................................................................... 93

Table 25. RMII Timing Parameters ...................................................................................................................................... 94

Table 26. I2C Timing Parameters ........................................................................................................................................ 96

Table 27. SPI Input Timing Parameters............................................................................................................................... 97

Table 28. SPI Output Timing Parameters ............................................................................................................................ 98

Table 29. Auto-Negotiation Timing Parameters................................................................................................................... 99

Table 30. MDC/MDIO Timing Parameters ......................................................................................................................... 100

Table 31. Transformer Selection Criteria ........................................................................................................................... 103

Table 32. Qualified Single Port Magnetics......................................................................................................................... 103

Table 33. Typical Reference Crystal Characteristics......................................................................................................... 103

September 2011 10 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Pin Description and I/O Assignment

Pin Number Pin Name

1 RXM1

4

5

2

3

6

RXP1

TXM1

TXP1

VDDA_3.3

ISET

7 VDDA_1.8

8

9

RXM2

RXP2

10 AGND

11 TXM2

12

13

TXP2

NC

14 X1

Type

(1)

Description

I/O Physical receive or transmit signal (– differential)

I/O

I/O

I/O

P

O

P

I/O

I/O

Physical receive or transmit signal (+ differential)

Physical transmit or receive signal (– differential)

Physical transmit or receive signal (+ differential)

3.3V analog V

DD

Set physical transmit output current.

Pull-down this pin with a 11.8K 1% resistor to ground.

1.8V analog core power input from VDDCO (pin 42).

Physical receive or transmit signal (– differential)

Physical receive or transmit signal (+ differential)

15 X2

16 SMTXEN3

17 SMTXD33/

EN_REFCLKO_3

18 SMTXD32

19

20

SMTXD31

SMTXD30

21 GND

22 VDDIO

I/O Physical transmit or receive signal (– differential)

I/O

NC

Physical transmit or receive signal (+ differential)

No Connection.

I 25 or 50MHz crystal/oscillator clock connections.

Pins (X1, X2) connect to a crystal. If an oscillator is used, X1 connects to a

3.3V tolerant oscillator and X2 is a NC.

O

Note: Clock is +/- 50ppm for both crystal and oscillator, the clock should be applied to X1 pin before reset voltage goes high.

Ipu lpu

Ipu

Ipu

Ipu

Switch MII transmit enable

MLL/FLL: Switch MII transmit data bit 3

RLL: Strap option: RMII mode Clock selection

PU = Enable REFCLKO_3 output

PD = Disable REFCLKO_3 output

Switch MII transmit data bit 2

RLL: Strap option: X1 pin Clock selection (for Rev A3 and behind A3)

PU = 25MHz to X1 pin as clock source (default).

PD = 50MHz to X1 pin as clock source to provide/receive 50MHz RMII reference clock for RLL part.

Switch MII/RMII transmit data bit 1

Switch MII/RMII transmit data bit 0

23 SMTXC3/

REFCLKI_3

24 SMTXER3/

MII_LINK_3

P 3.3V, 2.5V or 1.8V digital VDD input power supply for IO with well decoupling capacitors.

I/O MLL/FLL: Switch MII transmit clock (MII and SNI modes only)

Output in PHY MII mode and SNI mode

Input in MAC MII and RMII mode.

RLL: Reference clock input

Note: pull-down by resistor is needed if internal reference clock is used in

RLL by register 198 bit 3.

Ipd Switch port3 MII transmit error in MII mode

0= MII link indicator from host in MII PHY mode.

1= No link on port 3 MII PHY mode and enable By-pass mode.

September 2011 11 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Pin Description and I/O Assignment (Continued)

Pin Number Pin Name

25 SMRXDV3

26 SMRXD33/

REFCLKO_3

27

28

29

30

SMRXD32

SMRXD31

SMRXD30

SMRXC3

Type

(1)

Description

lpu/O lpu/O

Ipu/O

Ipu/O lpu/O

Switch MII/RMII receive data valid

Strap option:

Force duplex mode (P1DPX)

PU = port 1 default to full duplex mode if P1ANEN = 1 and auto- negotiation fails. Force port 1 in full-duplex mode if P1ANEN = 0.

PD = port 1 default to half duplex mode if P1ANEN = 1 and auto- negotiation fails. Force port 1 in half duplex mode if P1ANEN = 0.

MLL/FLL: Switch MII receive data bit 3/

RLL: Ouput reference clock in RMII mode.

Strap option:

enable auto-negotiation on port 2 (P2ANEN)

PU = enable

PD = disable

Switch MII receive data bit 2

Strap option:

Force the speed on port 2 (P2SPD)

PU = force port 2 to 100BT if P2ANEN = 0

PD = force port 2 to 10BT if P2ANEN = 0

Switch MII/RMII receive data bit 1

Strap option:

Force duplex mode (P2DPX)

PU = port 2 default to full duplex mode if P2ANEN = 1 and auto-negotiation fails. Force port 2 in full duplex mode if P2ANEN = 0.

PD = Port 2 set to half duplex mode if P2ANEN = 1 and auto-negotiation fails.

Force port 2 in half duplex mode if P2ANEN = 0.

Switch MII/RMII receive data bit 0

Strap option:

Force flow control on port 2 (P2FFC)

PU = always enable (force) port 2 flow control feature.

PD = port 2 flow control feature enable is determined by auto- negotiation result.

I/O Switch MII receive clock.

Output in PHY MII mode

Input in MAC MII mode

31 GND

32 VDDC

33

34

SCOL3

SCRS3

35 INTRN

P

Ipu/O

Ipu/O

1.8V digital core power input from VDDCO (pin 42).

Switch MII collision detect

Switch MII carrier sense

36 SCL_MDC

37 SDA_MDIO Ipu/O

Active Low signal to host CPU to indicate an interrupt status bit is set when lost link. Refer to register 187 and 188.

SPI slave mode / I

2

C slave mode: clock input

I

2

C master mode: clock output

MIIM clock input

SPI slave mode: serial data input

I

2

C master/slave mode: serial data input/output

MIIM: data input/out

Note: an external pull-up is needed on this pin when it is in use.

September 2011 12 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Pin Description and I/O Assignment (Continued)

Pin Number Pin Name

38 SPIQ

39 SPISN

40 VDDIO

Type

(1)

Description

lpd/O SPI slave mode: serial data output

Note: an external pull-up is needed on this pin when it is in use.

Strap option:

Force flow control on port 1 (P1FFC)

PU = always enable (force) port 1 flow control feature

PD = port 1 flow control feature enable is determined by auto negotiation result.

I SPI slave mode: chip select (active low)

When SPISN is high, the KSZ8863MLL/FLL/RLLis deselected and SPIQ is held in high impedance state.

A high-to-low transition is used to initiate SPI data transfer.

Note: an external pull-up is needed on this pin when it is in use.

P 3.3V, 2.5V or 1.8V digital VDD input power supply for IO with well decoupling capacitors.

41 GND

42 VDDCO P 1.8V core power voltage output (internal 1.8V LDO regulator output), this

1.8V output pin provides power to both VDDA_1.8 and VDDC input pins.

Note: Internally 1.8V LDO regulator input comes from VDDIO. Do not connect an external power supply to VDDCO pin. The ferrite bead is requested between analog and digital 1.8V core power.

43 P1LED1

Default: Speed (refer to register 195 bit[5:4])

Strap option:

Force the speed on port 1 (P1SPD)

PU = force port 1 to 100BT if P1ANEN = 0

PD = force port 1 to 10BT if P1ANEN = 0

44 P1LED0

Default: Link/Act. (refer to register 195 bit[5:4])

Strap option:

enable auto-negotiation on port 1 (P1ANEN)

PU = enable (It is better to pull up in design)

PD = disable (default)

September 2011 13 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Pin Description and I/O Assignment (Continued)

Type

(1)

Description Pin Number Pin Name

45 P2LED1

46 P2LED0

Strap option:

Serial bus configuration

Port 2 LED Indicators:

Default: Link/Act. (refer to register 195 bit[5:4])

Strap option

: Serial bus configuration

Serial bus configuration pins to select mode of access to

KSZ8863MLL/FLL/RLL internal registers.

[P2LED1, P2LED0] = [0, 0] — I

2

C master (EEPROM) mode

(If EEPROM is not detected, the KSZ8863MLL/FLL/RLL will be configured with the default values of its internal registers and the values of its strap-in pins.)

Interface Signals Type Description

SPIQ O Not used (tri-stated)

[P2LED1, P2LED0] = [0, 1] — I

2

C slave mode

The external I

2

C master will drive the SCL_MDC clock.

The KSZ8863MLL/FLL/RLL device addresses are:

1011_1111 <read>

1011_1110 <write>

Interface Signals Type Description

SPIQ O Not used (tri-stated)

[P2LED1, P2LED0] = [1, 0] — SPI slave mode

Interface Signals Type Description

SPIQ O SPI data out

47 RSTN

48 FXSD1

Notes:

1. Speed : Low (100BASE-TX), High (10BASE-T)

Full duplex : Low (full duplex), High (half duplex)

Act : Toggle (transmit / receive activity)

Link : Low (link), High (no link)

SDA_MDIO

SPISN

I

I

SPI data In

SPI chip select

[P2LED1, P2LED0] = [1, 1]

– SMI/MIIM-mode

In SMI mode, the KSZ8863MLL/FLL/RLL provides access to all its internal 8bit registers through its SCL_MDC and SDA_MDIO pins.

In MIIM mode, the KSZ8863MLL/FLL/RLL provides access to its 16-bit MIIM registers through its SDC_MDC and SDA_MDIO pins.

Ipu Hardware reset pin (active low)

I MLL/RLL: No connection or connect to analog ground by 1Kohm pull-down resistor.

FLL: Fiber signal detect

September 2011 14 M9999-092111-1.4

Micrel, Inc.

2. P = Power supply.

Gnd = Ground.

I = Input.

Ipu/O = Input with internal pull-up during reset, output pin otherwise.

Ipu = Input w/ internal pull-up.

Ipd = Input w/ internal pull-down.

Opu = Output w/ internal pull-up.

Opd = Output w/ internal pull-down.

KSZ8863MLL/FLL//RLL

September 2011 15 M9999-092111-1.4

Micrel, Inc.

Pin Configuration

KSZ8863MLL/FLL//RLL

48-Pin LQFP

(Top View)

September 2011 16 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Functional Description

The KSZ8863MLL/FLL/RLL contains two 10/100 physical layer transceivers and three MAC units with an integrated Layer

2 managed switch.

The KSZ8863MLL/FLL/RLL has the flexibility to reside in either a managed or unmanaged design. In a managed design, the host processor has complete control of the KSZ8863MLL/FLL/RLL via the SMI interface, MIIM interface, SPI bus, or

I

2

C bus. An unmanaged design is achieved through I/O strapping and/or EEPROM programming at system reset time.

On the media side, the KSZ8863MLL/FLL/RLL supports IEEE 802.3 10BASE-T and 100BASE-TX on both PHY ports.

Physical signal transmission and reception are enhanced through the use of patented analog circuitries that make the design more efficient and allow for lower power consumption and smaller chip die size.

Functional Overview: Physical Layer Transceiver

100BASE-TX Transmit

The 100BASE-TX transmit function performs parallel-to-serial conversion, 4B/5B coding, scrambling, NRZ-to-NRZI conversion, and MLT3 encoding and transmission.

The circuitry starts with a parallel-to-serial conversion, which converts the MII data from the MAC into a 125MHz serial bit stream. The data and control stream is then converted into 4B/5B coding, followed by a scrambler. The serialized data is further converted from NRZ-to-NRZI format, and then transmitted in MLT3 current output. The output current is set by an external1% 11.8K

Ω resistor for the 1:1 transformer ratio.

The output signal has a typical rise/fall time of 4ns and complies with the ANSI TP-PMD standard regarding amplitude balance, overshoot, and timing jitter. The wave-shaped 10BASE-T output is also incorporated into the 100BASE-TX transmitter.

100BASE-TX Receive

The 100BASE-TX receiver function performs adaptive equalization, DC restoration, MLT3-to-NRZI conversion, data and clock recovery, NRZI-to-NRZ conversion, de-scrambling, 4B/5B decoding, and serial-to-parallel conversion.

The receiving side starts with the equalization filter to compensate for inter-symbol interference (ISI) over the twisted pair cable. Since the amplitude loss and phase distortion is a function of the cable length, the equalizer must adjust its characteristics to optimize performance. In this design, the variable equalizer makes an initial estimation based on comparisons of incoming signal strength against some known cable characteristics, and then tunes itself for optimization.

This is an ongoing process and self-adjusts against environmental changes such as temperature variations.

Next, the equalized signal goes through a DC restoration and data conversion block. The DC restoration circuit is used to compensate for the effect of baseline wander and to improve the dynamic range. The differential data conversion circuit converts the MLT3 format back to NRZI. The slicing threshold is also adaptive.

The clock recovery circuit extracts the 125MHz clock from the edges of the NRZI signal. This recovered clock is then used to convert the NRZI signal into the NRZ format. This signal is sent through the de-scrambler followed by the 4B/5B decoder. Finally, the NRZ serial data is converted to the MII format and provided as the input data to the MAC.

PLL Clock Synthesizer

The KSZ8863MLL/FLL/RLL generates 125MHz, 62.5MHz, and 31.25MHz clocks for system timing. Internal clocks are generated from an external 25MHz or 50MHz crystal or oscillator. KSZ8863RLL can generates a 50MHz reference clock for the RMII interface

Scrambler/De-scrambler (100BASE-TX Only)

The purpose of the scrambler is to spread the power spectrum of the signal to reduce electromagnetic interference (EMI) and baseline wander. Transmitted data is scrambled through the use of an 11-bit wide linear feedback shift register

(LFSR). The scrambler generates a 2047-bit non-repetitive sequence, and the receiver then de-scrambles the incoming data stream using the same sequence as at the transmitter.

100BASE-FX Operation

100BASE-FX operation is similar to 100BASE-TX operation with the differences being that the scrambler/de-scrambler and MLT3 encoder/decoder are bypassed on transmission and reception. In addition, auto-negotiation is bypassed and auto MDI/MDI-X is disabled.

September 2011 17 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

100BASE-FX Signal Detection

In 100BASE-FX operation, FXSD (fiber signal detect), input pin 48, is usually connected to the fiber transceiver SD (signal detect) output pin. The fiber signal threshold can be selected by register 192 bit 6 for port 1 , When FXSD is less than the threshold, no fiber signal is detected and a far-end fault (FEF) is generated. When FXSD is over the threshold, the fiber signal is detected.

Alternatively, the designer may choose not to implement the FEF feature. In this case, the FXSD input pin is tied high to force 100BASE-FX mode.

100BASE-FX signal detection is summarized in the following table:

Register 192 bit 7 bit 6 (port 1)

1

0

Fiber Signal Threshold at FXSD

2.0V

1.2V

Table 1. FX Signal Threshold

To ensure proper operation, a resistive voltage divider is recommended to adjust the fiber transceiver SD output voltage swing to match the FXSD pin’s input voltage threshold.

100BASE-FX Far-End Fault

A far-end fault (FEF) occurs when the signal detection is logically false on the receive side of the fiber transceiver. The

KSZ8863FLL detects a FEF when its FXSD input is below the Fiber Signal Threshold. When a FEF is detected, the

KSZ8863FLL signals its fiber link partner that a FEF has occurred by sending 84 1’s followed by a zero in the idle period between frames.

By default, FEF is enabled. FEF can be disabled through register setting.

10BASE-T Transmit

The 10BASE-T driver is incorporated with the 100BASE-TX driver to allow for transmission using the same magnetics.

They are internally wave-shaped and pre-emphasized into outputs with a typical 2.3V amplitude. The harmonic contents are at least 27dB below the fundamental frequency when driven by an all-ones Manchester-encoded signal.

10BASE-T Receive

On the receive side, input buffers and level detecting squelch circuits are employed. A differential input receiver circuit and a phase-locked loop (PLL) perform the decoding function. The Manchester-encoded data stream is separated into clock signal and NRZ data. A squelch circuit rejects signals with levels less than 400mV or with short pulse widths to prevent noise at the RXP-or-RXM input from falsely triggering the decoder. When the input exceeds the squelch limit, the PLL locks onto the incoming signal and the KSZ8863MLL/FLL/RLL decodes a data frame. The receiver clock is maintained active during idle periods in between data reception.

MDI/MDI-X Auto Crossover

To eliminate the need for crossover cables between similar devices, the KSZ8863MLL/FLL/RLL supports HP Auto

MDI/MDI-X and IEEE 802.3u standard MDI/MDI-X auto crossover. HP Auto MDI/MDI-X is the default.

The auto-sense function detects remote transmit and receive pairs and correctly assigns transmit and receive pairs for the

KSZ8863MLL/FLL/RLL device. This feature is extremely useful when end users are unaware of cable types, and also, saves on an additional uplink configuration connection. The auto-crossover feature can be disabled through the port control registers, or MIIM PHY registers.

The IEEE 802.3u standard MDI and MDI-X definitions are:

1

2

3

MDI

RJ-45 Pins

6

Signals

MDI-X

RJ-45 Pins Signals

TD+ 1 RD+

TD- 2 RD-

RD+ 3 TD+

RD- 6 TD-

Table 2. MDI/MDI-X Pin Definitions

September 2011 18 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Straight Cable

A straight cable connects an MDI device to an MDI-X device, or an MDI-X device to an MDI device. The following diagram depicts a typical straight cable connection between a NIC card (MDI) and a switch, or hub (MDI-X).

Figure 1. Typical Straight Cable Connection

September 2011 19 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Crossover Cable

A crossover cable connects an MDI device to another MDI device, or an MDI-X device to another MDI-X device. The following diagram shows a typical crossover cable connection between two switches or hubs (two MDI-X devices).

10/100 Ethernet

Media Dependent Interface

10/100 Ethernet

Media Dependent Interface

Receive Pair

Transmit Pair

1

2

3

4

5

6

7

8

Crossover

Cable

1

2

3

4

5

6

7

8

Receive Pair

Transmit Pair

Modular Connector (RJ-45)

HUB

(Repeater or Switch)

Modular Connector (RJ-45)

HUB

(Repeater or Switch)

Figure 2. Typical Crossover Cable Connection

September 2011 20 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Auto-Negotiation

The KSZ8863MLL/FLL/RLL conforms to the auto-negotiation protocol, defined in Clause 28 of the IEEE 802.3u specification.

Auto-negotiation allows unshielded twisted pair (UTP) link partners to select the best common mode of operation. In autonegotiation, link partners advertise their capabilities across the link to each other. If auto-negotiation is not supported or the KSZ8863MLL/FLL/RLL link partner is forced to bypass auto-negotiation, the KSZ8863MLL/FLL/RLL sets its operating mode by observing the signal at its receiver. This is known as parallel detection, and allows the KSZ8863MLL/FLL/RLL to establish link by listening for a fixed signal protocol in the absence of auto-negotiation advertisement protocol.

The link up process is shown in the following flow diagram.

September 2011

Figure 3. Auto-Negotiation and Parallel Operation

21 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

LinkMD

®

Cable Diagnostics

KSZ8863MLL/FLL/RLL supports the LinkMD

®

.

The LinkMD

®

feature utilizes time domain reflectometry (TDR) to analyze the cabling plant for common cabling problems such as open circuits, short circuits and impedance mismatches.

LinkMD

®

works by sending a pulse of known amplitude and duration down the MDI and MDI-X pairs and then analyzes the shape of the reflected signal. Timing the pulse duration gives an indication of the distance to the cabling fault. Internal circuitry displays the TDR information in a user-readable digital format.

Note: Cable diagnostics are only valid for copper connections and do not support fiber optic operation.

Access

LinkMD

®

is initiated by accessing the PHY special control/status registers {26, 42} and the LinkMD result registers {27, 43} for ports 1 and 2 respectively; and in conjunction with the port registers control 13 for ports 1and 2 respectively to disable

Auto MDI/MDIX.

Alternatively, the MIIM PHY registers 0 and 29 can be used for LinkMD

®

access.

Usage

The following is a sample procedure for using LinkMD

®

with registers {42,43,45} on port 2.

1. Disable auto MDI/MDI-X by writing a ‘1’ to register 45, bit [2] to enable manual control over the differential pair used to transmit the LinkMD

®

pulse.

2. Start cable diagnostic test by writing a ‘1’ to register 42, bit [4]. This enable bit is self-clearing.

3. Wait (poll) for register 42, bit [4] to return a ‘0’, indicating cable diagnostic test is completed.

4. Read cable diagnostic test results in register 42, bits [6:5]. The results are as follows:

00 = normal condition (valid test)

01 = open condition detected in cable (valid test)

10 = short condition detected in cable (valid test)

11 = cable diagnostic test failed (invalid test)

The ‘11’ case, invalid test, occurs when the KSZ8863MLL/FLL/RLL is unable to shut down the link partner. In this instance, the test is not run, since it would be impossible for the KSZ8863MLL/FLL/RLL to determine if the detected signal is a reflection of the signal generated or a signal from another source.

5. Get distance to fault by concatenating register 42, bit [0] and register 43, bits [7:0]; and multiplying the result by a constant of 0.4. The distance to the cable fault can be determined by the following formula:

D (distance to cable fault) = 0.4 x {(register 26, bit [0]),(register 27, bits [7:0])}

D (distance to cable fault) is expressed in meters.

Concatenated value of registers 42 and 43 is converted to decimal before multiplying by 0.4.

The constant (0.4) may be calibrated for different cabling conditions, including cables with a velocity of propagation that varies significantly from the norm.

Functional Overview: Power Management

The KSZ8863MLL/FLL/RLL supports enhanced power management feature in low power state with energy detection to ensure low-power dissipation during device idle periods. There are five operation modes under the power management function which is controlled by two bits in Register 195 (0xC3) and one bit in Register 29 (0x1D),45(0x2D) as shown below:

Register 195 bit[1:0] = 00 Normal Operation Mode

Register 195 bit[1:0] = 01 Energy Detect Mode

Register 195 bit[1:0] = 10 Soft Power Down Mode

Register 195 bit[1:0] = 11 Power Saving Mode

Register 29,45 bit 3 =1 Port Based Power Down Mode

September 2011 22 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Table 3 indicates all internal function blocks status under four different power management operation modes.

KSZ8863MLL/FLL/RLL

Function Blocks

Internal PLL Clock

Tx/Rx PHY

Power Management Operation Modes

Normal Mode Power Saving Mode

Enabled Enabled

Enabled

Energy Detect Mode

Disabled

Rx unused block disabled Energy detect at Rx

Soft Power Down Mode

Disabled

Disabled

Host Interface Enabled Enabled Disabled

Table 3. Internal Function Block Status

Disabled

Normal Operation Mode

This is the default setting bit[1:0]=00 in register 195 after the chip power-up or hardware reset . When

KSZ8863MLL/FLL/RLL is in this normal operation mode, all PLL clocks are running, PHY and MAC are on and the host interface is ready for CPU read or write.

During the normal operation mode, the host CPU can set the bit[1:0] in register 195 to transit the current normal operation mode to any one of the other three power management operation modes.

Energy Detect Mode

The energy detect mode provides a mechanism to save more power than in the normal operation mode when the

KSZ8863MLL/FLL/RLL is not connected to an active link partner. In this mode, the device will save up to 87% of the power. If the cable is not plugged, the KSZ8863MLL/FLL/RLL can automatically enter to a low power state, a.k.a., the energy detect mode. In this mode, KSZ8863MLL/FLL/RLL will keep transmitting 120ns width pulses at 1 pulse/s rate.

Once activity resumes due to plugging a cable or attempting by the far end to establish link, the KSZ8863MLL/FLL/RLL can automatically power up to normal power state in energy detect mode.

Energy detect mode consists of two states, normal power state and low power state. While in low power state, the

KSZ8863MLL/FLL/RLL reduces power consumption by disabling all circuitry except the energy detect circuitry of the receiver. The energy detect mode is entered by setting bit[1:0]=01 in register 195. When the KSZ8863MLL/FLL/RLL is in this mode, it will monitor the cable energy. If there is no energy on the cable for a time longer than pre-configured value at bit[7:0] Go-Sleep time in register 196, KSZ8863MLL/FLL/RLL will go into a low power state. When KSZ8863MLL/FLL/RLL is in low power state, it will keep monitoring the cable energy. Once the energy is detected from the cable,

KSZ8863MLL/FLL/RLL will enter normal power state. When KSZ8863MLL/FLL/RLL is at normal power state, it is able to transmit or receive packet from the cable.

It will save about 87% of the power when MII interface is in PHY mode (Register 53 bit 7 =0), pin SMTXER3/MII_LINK_3 is connected to High, register 195 bit [1:0] =01, bit 2 =1(Disable PLL), not cables are connected.

Soft Power Down Mode

The soft power down mode is entered by setting bit[1:0]=10 in register 195. When KSZ8863MLL/FLL/RLL is in this mode, all PLL clocks are disabled, the PHY and the MAC are off, all internal registers value will not change. When the host set bit[1:0]=00 in register 195, this device will be back from current soft power down mode to normal operation mode.

Power Saving Mode

The power saving mode is entered when auto-negotiation mode is enabled, cable is disconnected, and by setting bit[1:0]=11 in register 195. When KSZ8863MLL/FLL/RLL is in this mode, all PLL clocks are enabled, MAC is on, all internal registers value will not change, and host interface is ready for CPU read or write. In this mode, it mainly controls the PHY transceiver on or off based on line status to achieve power saving. The PHY remains transmitting and only turns off the unused receiver block. Once activity resumes due to plugging a cable or attempting by the far end to establish link, the KSZ8863MLL/FLL/RLL can automatically enabled the PHY power up to normal power state from power saving mode.

During this power saving mode, the host CPU can set bit[1:0] =0 in register 195 to transit the current power saving mode to any one of the other three power management operation modes.

Port based Power Down Mode

In addition, the KSZ8863MLL/FLL/RLL features a per-port power down mode. To save power, a PHY port that is not in use can be powered down via port control register 29 or 45 bit 3, or MIIM PHY register. It will saves about 15mA per port.

September 2011 23 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Functional Overview: MAC and Switch

Address Lookup

The internal lookup table stores MAC addresses and their associated information. It contains a 1K unicast address table plus switching information.

The KSZ8863MLL/FLL/RLL is guaranteed to learn 1K addresses and distinguishes itself from hash-based lookup tables, which depending on the operating environment and probabilities, may not guarantee the absolute number of addresses it can learn.

Learning

The internal lookup engine updates its table with a new entry if the following conditions are met:

1. The received packet's Source Address (SA) does not exist in the lookup table.

2. The received packet is good; the packet has no receiving errors, and is of legal length.

The lookup engine inserts the qualified SA into the table, along with the port number and time stamp. If the table is full, the last entry of the table is deleted to make room for the new entry.

Migration

The internal lookup engine also monitors whether a station has moved. If a station has moved, it will update the table accordingly. Migration happens when the following conditions are met:

1. The received packet’s SA is in the table but the associated source port information is different.

2. The received packet is good; the packet has no receiving errors, and is of legal length.

The lookup engine will update the existing record in the table with the new source port information.

Aging

The lookup engine updates the time stamp information of a record whenever the corresponding SA appears. The time stamp is used in the aging process. If a record is not updated for a period of time, the lookup engine removes the record from the table. The lookup engine constantly performs the aging process and will continuously remove aging records. The aging period is about 200 seconds. This feature can be enabled or disabled through register 3 (0x03) bit [2].

Forwarding

The KSZ8863MLL/FLL/RLL forwards packets using the algorithm that is depicted in the following flowcharts. Figure 4 shows stage one of the forwarding algorithm where the search engine looks up the VLAN ID, static table, and dynamic table for the destination address, and comes up with “port to forward 1” (PTF1). PTF1 is then further modified by spanning tree, IGMP snooping, port mirroring, and port VLAN processes to come up with “port to forward 2” (PTF2), as shown in Figure 5. The packet is sent to PTF2.

September 2011 24 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

September 2011

Figure 4. Destination Address Lookup Flow Chart, Stage 1

25 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Figure 5. Destination Address Resolution Flow Chart, Stage 2

The KSZ8863MLL/FLL/RLL will not forward the following packets:

These include framing errors, Frame Check Sequence (FCS) errors, alignment errors, and illegal size packet errors.

2. IEEE802.3x PAUSE frames

KSZ8863MLL/FLL/RLL intercepts these packets and performs full duplex flow control accordingly.

3. "Local" packets

Based on destination address (DA) lookup. If the destination port from the lookup table matches the port from which the packet originated, the packet is defined as "local."

September 2011 26 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Switching Engine

The KSZ8863MLL/FLL/RLL features a high-performance switching engine to move data to and from the MACs’ packet buffers. It operates in store and forward mode, while the efficient switching mechanism reduces overall latency.

The switching engine has a 32kB internal frame buffer. This buffer pool is shared between all three ports. There are a total of 256 buffers available. Each buffer is sized at 128 bytes.

MAC Operation

The KSZ8863MLL/FLL/RLL strictly abides by IEEE 802.3 standards to maximize compatibility.

Inter Packet Gap (IPG)

If a frame is successfully transmitted, the 96 bits time IPG is measured between the two consecutive MTXEN. If the current packet is experiencing collision, the 96 bits time IPG is measured from MCRS and the next MTXEN.

Back-Off Algorithm

The KSZ8863MLL/FLL/RLL implements the IEEE 802.3 standard for the binary exponential back-off algorithm, and optional "aggressive mode" back-off. After 16 collisions, the packet is optionally dropped depending on the switch configuration for register 4 (0x04) bit [3].

Late Collision

If a transmit packet experiences collisions after 512 bit times of the transmission, the packet is dropped.

Illegal Frames

The KSZ8863MLL/FLL/RLL discards frames less than 64 bytes, and can be programmed to accept frames up to1518 bytes, 1536 bytes or 1916 bytes. These maximum frame size settings are programmed in register 4 (0x04). Since the

KSZ8863MLL/FLL/RLL supports VLAN tags, the maximum sizing is adjusted when these tags are present.

Full Duplex Flow Control

The KSZ8863MLL/FLL/RLL supports standard IEEE 802.3x flow control frames on both transmit and receive sides.

On the receive side, if the KSZ8863MLL/FLL/RLL receives a pause control frame, the KSZ8863MLL/FLL/RLL will not transmit the next normal frame until the timer, specified in the pause control frame, expires. If another pause frame is received before the current timer expires, the timer will be updated with the new value in the second pause frame. During this period (while it is flow controlled), only flow control packets from the KSZ8863MLL/FLL/RLL are transmitted.

On the transmit side, the KSZ8863MLL/FLL/RLL has intelligent and efficient ways to determine when to invoke flow control. The flow control is based on availability of the system resources, including available buffers, available transmit queues and available receive queues.

The KSZ8863MLL/FLL/RLL will flow control a port that has just received a packet if the destination port resource is busy.

The KSZ8863MLL/FLL/RLL issues a flow control frame (XOFF), containing the maximum pause time defined by the IEEE

802.3x standard. Once the resource is freed up, the KSZ8863MLL/FLL/RLL sends out the other flow control frame (XON) with zero pause time to turn off the flow control (turn on transmission to the port). A hysteresis feature is provided to prevent the flow control mechanism from being constantly activated and deactivated.

The KSZ8863MLL/FLL/RLL flow controls all ports if the receive queue becomes full.

Half-Duplex Backpressure

A half-duplex backpressure option (not in IEEE 802.3 standards) is also provided. The activation and deactivation conditions are the same as full duplex flow control. If backpressure is required, the KSZ8863MLL/FLL/RLL sends preambles to defer the other stations' transmission (carrier sense deference).

To avoid jabber and excessive deference (as defined in the 802.3 standard), after a certain time, the

KSZ8863MLL/FLL/RLL discontinues the carrier sense and then raises it again quickly. This short silent time (no carrier sense) prevents other stations from sending out packets thus keeping other stations in a carrier sense deferred state. If the port has packets to send during a backpressure situation, the carrier sense type backpressure is interrupted and those packets are transmitted instead. If there are no additional packets to send, carrier sense type backpressure is reactivated again until switch resources free up. If a collision occurs, the binary exponential back-off algorithm is skipped and carrier sense is generated immediately, thus reducing the chance of further collisions and carrier sense is maintained to prevent packet reception.

To ensure no packet loss in 10 BASE-T or 100 BASE-TX half duplex modes, the user must enable the following:

• Aggressive back-off (register 3 (0x03), bit [0])

September 2011 27 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

• No excessive collision drop (register 4 (0x04), bit [3])

Note: These bits are not set as defaults, as this is not the IEEE standard.

Broadcast Storm Protection

The KSZ8863MLL/FLL/RLL has an intelligent option to protect the switch system from receiving too many broadcast packets. As the broadcast packets are forwarded to all ports except the source port, an excessive number of switch resources (bandwidth and available space in transmit queues) may be utilized. The KSZ8863MLL/FLL/RLL has the option to include “multicast packets” for storm control. The broadcast storm rate parameters are programmed globally, and can be enabled or disabled on a per port basis. The rate is based on a 67ms interval for 100BT and a 500ms interval for 10BT.

At the beginning of each interval, the counter is cleared to zero, and the rate limit mechanism starts to count the number of bytes during the interval. The rate definition is described in register 6 (0x06) and 7 (0x07). The default setting is 0x63

(99 decimal). This is equal to a rate of 1%, calculated as follows:

148,800 frames/sec × 67ms/interval × 1% = 99 frames/interval (approx.) = 0x63

Note: 148,800 frames/sec is based on 64-byte block of packets in 100BASE-TX with 12 bytes of IPG and 8 bytes of preamble between two packets.

Port Individual MAC address and Source Port Filtering

The KSZ8863MLL/FLL/RLL provide individual MAC address for port 1 and port 2 respectively. They can be set at register

142-147 and 148-153. The packet will be filtered if its source address matches the MAC address of port 1 or port 2 when the register 21 and 37 bit 6 is set to 1 respectively. For example, the packet will be dropped after it completes the loop of a ring network.

MII Interface Operation

The Media Independent Interface (MII) is specified in Clause 22 of the IEEE 802.3u Standard. It provides a common interface between physical layer and MAC layer devices. The MII provided by the KSZ8863MLL/FLL is connected to the device’s third MAC, the MII default is PHY mode and can set to MAC mode by the register 53 bit7. The interface contains two distinct groups of signals: one for transmission and the other for reception. The following table describes the signals used by the MII bus.

PHY-Mode Connections

MTXC

MCOL

MCRS

MRXDV

MRXER

MRXD3

MRXD2

MRXD1

MRXD0

MRXC

External MAC

Controller Signals

MTXEN

MTXER

MTXD3

MTXD2

MTXD1

MTXD0

KSZ8863MLL/FLL

PHY Signals

SMTXD33

SMTXD32

SMTXD31

SMTXD30

SMRXDV3

(not used)

SMRXD33

SMRXD32

SMRXD31

SMRXD30

Pin

Descriptions

Transmit data bit 3

Transmit data bit 2

Transmit data bit 1

Transmit data bit 0

Receive data valid

Receive error

Receive data bit 3

Receive data bit 2

Receive data bit 1

Receive data bit 0

MAC-Mode Connections

External

PHY Signals

KSZ8863MLL/FLL

MAC Signals

MTXD3

MTXD2

MTXD1

MTXD0

MRXDV

MRXER

MRXD3

MRXD2

MRXD1

MRXD0

SMRXD33

SMRXD32

SMRXD31

SMRXD30

SMTXEN3

SMTXER3

SMTXD33

SMTXD32

SMTXD31

SMTXD30

Table 4. MII Signals

The MII operates in either PHY mode or MAC mode. The data interface is a nibble wide and runs at ¼ the network bit rate

September 2011 28 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

(not encoded). Additional signals on the transmit side indicate when data is valid or when an error occurs during transmission. Similarly, the receive side has signals that convey when the data is valid and without physical layer errors.

For half duplex operation, the SCOL signal indicates if a collision has occurred during transmission.

The KSZ8863MLL/FLL does not provide the MRXER signal for PHY mode operation and the MTXER signal for MAC mode operation. Normally, MRXER indicates a receive error coming from the physical layer device and MTXER indicates a transmit error from the MAC device. Since the switch filters error frames, these MII error signals are not used by the

KSZ8863MLL/FLL. So, for PHY mode operation, if the device interfacing with the KSZ8863MLL/FLL has an MRXER input pin, it needs to be tied low. And, for MAC mode operation, if the device interfacing with the KSZ8863MLL/FLL has an

MTXER input pin, it also needs to be tied low.

The KSZ8863MLL/FLL provides a bypass feature in the MII PHY mode. Pin SMTXER3/MII_LINK is used for MII link status. If the host is power down, pin MII_LINK will go to high. In this case, no new ingress frames from port1 or port 2 will be sent out through port 3, and the frames for port 3 already in packet memory will be flushed out.

RMII Interface Operation

The Reduced Media Independent Interface (RMII) specifies a low pin count Media Independent Interface (MII). RMII provides a common interface between physical layer and MAC layer devices, and has the following key characteristics:

1. ports 10Mbps and 100Mbps data rates.

2. Uses a single 50 MHz clock reference (provided internally or externally).

3. Provides independent 2-bit wide (di-bit) transmit and receive data paths.

4. Contains two distinct groups of signals: one for transmission and the other for reception

When EN_REFCLKO_3 is high, KSZ8863RLL will output a 50MHz in REFCLKO_3. Register 198 bit[3] is used to select internal or external reference clock. Internal reference clock means that the clock for the RMII of KSZ8863RLL will be provided by the KSZ8863RLL internally and the REFCLKI_3 pin is unconnected. For the external reference clock, the clock will provide to KSZ8863RLL via REFCLKI_3.

Note:

If the reference clock is not provided by the KSZ8863RLL, this 50MHz reference clock with an external divide by 2 device has to be used in X1 pin instead of the 25MHz crystal since the clock skew of these two clock sources will impact on the RMII timing before Rev.A3 part. The Rev A3 part can connect the external 50MHz reference clock to X1 pin and SMTXC3/REFCLKI_3 pins directly with strap pins of pin 17 SMTXD33/EN_REFCLKO_3 and pin 18 SMTXD32 to be pulled down.

Reg198 bit[3] Pin 17 SMTXD33

/EN_REFCLKO_3

Pin 18 SMTXD32

Internal pull-up

Clock Source Note

Internal pull-up

(For Rev A3)

0

0

0 (pull down by 1k) 0 (pull down by 1k) External 50MHz OSC input to SMTXC3

/REFCLKI_3 and X1 pin directly

1 0 (pull down by 1k) 50MHz on X1 pin is as clock source.

REFCLKO_3 Output Is

Feedback to REFCLKI_3 externally

EN_REFCLKO_3 = 0 to Disable

REFCLKO_3 for better

EMI

EN_REFCLKO_3 = 1 to Enable REFCLKO_3

EN_REFCLKO_3 = 1 to Enable REFCLKO_3

1 1 0 or 1 clock source.

REFCLKO_3 Output is connected to REFCLKI_3 externally

25MHz on X1 pin,

50MHz RMII Clock goes to SMTXC3/ REFCLKI_3 internally.

REFCLKI_3 is unconnected

EN_REFCLKO_3 = 1 to Enable REFCLKO_3

1 0

September 2011

Table 5. RMII Clock Setting

29 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

The RMII provided by the KSZ8863RLL is connected to the device’s third MAC. It complies with the RMII Specification.

The following table describes the signals used by the RMII bus. Refer to RMII Specification for full detail on the signal description.

RMII

Signal Name

RXD1

RXD0

Direction

(with respect to the PHY)

Output

Output

Direction

(with respect to the MAC)

RMII

Signal Description

Synchronous 50 MHz clock reference for receive, transmit and control interface

Carrier sense/

Input

Receive data valid

Input

Input

Receive data bit 1

Receive data bit 0

KSZ8863RLL

RMII Signal (direction)

REFCLKI_3 (input)

SMRXDV3 (output)

SMRXD31 (output)

SMRXD30 (output)

TXD1

TXD0

Input

Input

Output

Output

Transmit data bit 1

Transmit data bit 0

Input

RX_ER Output

(not required)

Receive error

SMTXD31 (input)

SMTXD30 (input)

(not used)

--- --- ---

SMTXER3* (input)

* Connects to RX_ER signal of RMII PHY device

Table 6. RMII Signal Description

The KSZ8863RLL filters error frames, and thus does not implement the RX_ER output signal. To detect error frames from

RMII PHY devices, the SMTXER3 input signal of the KSZ8863RLL is connected to the RXER output signal of the RMII

PHY device.

Collision detection is implemented in accordance with the RMII Specification.

In RMII mode, tie MII signals, SMTXD3[3:2] and SMTXER3, to ground if they are not used.

The KSZ8863RLL RMII can interface with RMII PHY and RMII MAC devices. The latter allows two KSZ8863RLL devices to be connected back-to-back. The following table shows the KSZ8863RLL RMII pin connections with an external RMII

PHY and an external RMII MAC, such as another KSZ8863RLL device.

KSZ8863RLL

PHY-MAC Connections

External

PHY Signals

REF_CLK

TX_EN

TXD1

TXD0

CRS_DV

RXD1

RXD0

RX_ER

KSZ8863RLL

KSZ8863RLL

MAC Signals

Pin

Descriptions

MAC-MAC Connections

KSZ8863RLL

MAC Signals

External

MAC Signals

REFCLKI_3 Reference REFCLKI_3 REF_CLK

SMRXDV3

Carrier sense/

Receive data valid

SMRXDV3 CRS_DV

SMRXD31

SMRXD30

Receive data bit 1

Receive data bit 0

SMRXD31 RXD1

SMRXD30 RXD0

SMTXEN3 Transmit SMTXEN3 TX_EN

SMTXD31

SMTXD30

Transmit data bit 1

Transmit data bit 0

SMTXD31 TXD1

SMTXD30 TXD0

(not used) (not used)

Table 7. RMII Signal Connections

September 2011 30 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

MII Management (MIIM) Interface

The KSZ8863MLL/FLL/RLL supports the IEEE 802.3 MII Management Interface, also known as the Management Data

Input/Output (MDIO) Interface. This interface allows upper-layer devices to monitor and control the states of the

KSZ8863MLL/FLL/RLL. An external device with MDC/MDIO capability is used to read the PHY status or configure the

PHY settings. Further detail on the MIIM interface is found in Clause 22.2.4.5 of the IEEE 802.3u Specification and refer to 802.3 section 22.3.4 for the timing.

The MIIM interface consists of the following:

• A physical connection that incorporates the data line (SDA_MDIO) and the clock line (SCL_MDC).

• A specific protocol that operates across the aforementioned physical connection that allows an external controller to communicate with the KSZ8863MLL/FLL/RLL device.

• Access to a set of eight 16-bit registers, consisting of six standard MIIM registers [0:5] and two custom MIIM registers

[29, 31].

The MIIM Interface can operate up to a maximum clock speed of 5MHz.

The following table depicts the MII Management Interface frame format.

Preamble Start of

Frame

Read/Write

OP Code

PHY

Address

Bits [4:0]

REG

Address

Bits [4:0]

TA Data Bits [15:0] Idle

10

01

Table 8. MII Management Interface Frame Format

September 2011 31 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Serial Management Interface (SMI)

The SMI is the KSZ8863MLL/FLL/RLL non-standard MIIM interface that provides access to all KSZ8863MLL/FLL/RLL configuration registers. This interface allows an external device to completely monitor and control the states of the

KSZ8863MLL/FLL/RLL.

The SMI interface consists of the following:

• A physical connection that incorporates the data line (SDA_MDIO) and the clock line (SCL_MDC).

• A specific protocol that operates across the aforementioned physical connection that allows an external controller to communicate with the KSZ8863MLL/FLL/RLL device.

• Access to all KSZ8863MLL/FLL/RLL configuration registers. Register access includes the Global, Port and Advanced

Control Registers 0-198 (0x00 – 0xC6), and indirect access to the standard MIIM registers [0:5] and custom MIIM registers [29, 31].

The following table depicts the SMI frame format.

Preamble Start of

Frame

Read/Write

OP Code

PHY

Address

Bits [4:0]

REG

Address

Bits [4:0]

TA Data Bits [15:0] Idle

Read 32 00

Write 32 00

Table 9. Serial Management Interface (SMI) Frame Format

SMI register read access is selected when OP Code is set to “00” and bit 4 of the PHY address is set to ‘1’. SMI register write access is selected when OP Code is set to “00” and bit 4 of the PHY address is set to ‘0’. PHY address bit[3] is undefined for SMI register access, and hence can be set to either ‘0’ or ‘1’ in read/write operations.

To access the KSZ8873MLL/FLL/RLL registers 0-196 (0x00 – 0xC6), the following applies:

• PHYAD[2:0] and REGAD[4:0] are concatenated to form the 8-bit address; that is, {PHYAD[2:0], REGAD[4:0]} = bits

[7:0] of the 8-bit address.

• TA bits [1:0] are ’Z0’ means the processor MDIO pin is changed to input Hi-Z from output mode and the followed ‘0’ is the read response from device.

• TA bits [1:0] are set to ’10’ when write registers.

• Registers are 8 data bits wide.

For read operation, data bits [15:8] are read back as 0’s.

For write operation, data bits [15:8] are not defined, and hence can be set to either ‘0’ or ‘1’.

SMI register access is the same as the MIIM register access, except for the register access requirements presented in this section.

Advanced Switch Functions

Bypass Mode

The KSZ8863MLL/FLL/RLL also offer a by-pass mode which enables system-level power saving. When the CPU

(connected to Port 3) enters a power saving mode of power down or sleeping mode, the CPU can control the pin 24

SMTXER3/MII_LINK_3 which can be tied high so that the KSZ8863MLL/FLL/RLL detect this change and automatically switches to the by-pass mode in which the switch function between Port1 and Port2 is sustained. In the by-pass mode, the packets with DA to port 3 will be dropped and by pass the internal buffer memory, make the buffer memory more efficiency for the data transfer between port 1 and port 2. Specially, the power saving get more in energy detect mode with the by-pass to be used.

IEEE 802.1Q VLAN Support

The KSZ8863MLL/FLL/RLL supports 16 active VLANs out of the 4096 possible VLANs specified in the IEEE 802.1Q specification. KSZ8863MLL/FLL/RLL provides a 16-entries VLAN Table, which converts the 12-bits VLAN ID (VID) to the

4-bits Filter ID (FID) for address lookup. If a non-tagged or null-VID-tagged packet is received, the ingress port default VID is used for lookup. In VLAN mode, the lookup process starts with VLAN Table lookup to determine whether the VID is valid. If the VID is not valid, the packet is dropped and its address is not learned. If the VID is valid, the FID is retrieved for further lookup. The FID + Destination Address (FID+DA) are used to determine the destination port. The FID + Source

Address (FID+SA) are used for address learning.

September 2011 32 M9999-092111-1.4

Micrel, Inc.

DA found in Static MAC

Table?

No

No

Yes

Use FID flag? FID match?

Don’t care

Don’t care

0

Don’t care

Don’t care

Don’t care

KSZ8863MLL/FLL//RLL

DA+FID found in

Dynamic MAC

Table?

No

Action

Yes

Don’t care

Broadcast to the membership ports defined in the VLAN Table bits [18:16]

Send to the destination port defined in the

Dynamic MAC Address Table bits [53:52]

Send to the destination port(s) defined in the

Static MAC Address Table bits [50:48]

Table 10. FID+DA Lookup in VLAN Mode

FID+SA found in Dynamic MAC Table?

No

Yes

Action

Learn and add FID+SA to the Dynamic MAC Address Table

Update time stamp

Table 11. FID+SA Lookup in VLAN Mode

Advanced VLAN features, such as “Ingress VLAN filtering” and “Discard Non PVID packets” are also supported by the

KSZ8863MLL/FLL/RLL. These features can be set on a per port basis, and are defined in register 18, 34 and 50 for ports

1, 2 and 3, respectively.

QoS Priority Support

The KSZ8863MLL/FLL/RLL provides Quality of Service (QoS) for applications such as VoIP and video conferencing.

Offering four priority queues per port, the per-port transmit queue can be split into four priority queues: Queue 3 is the highest priority queue and Queue 0 is the lowest priority queue. Bit [0] of registers 16, 32 and 48 is used to enable split transmit queues for ports 1, 2 and 3, respectively. If a port's transmit queue is not split, high priority and low priority packets have equal priority in the transmit queue.

There is an additional option to either always deliver high priority packets first or use weighted fair queuing for the four priority queues. This global option is set and explained in bit [3] of register 5.

Port-Based Priority

With port-based priority, each ingress port is individually classified as a high priority receiving port. All packets received at the high priority receiving port are marked as high priority and are sent to the high-priority transmit queue if the corresponding transmit queue is split. Bits [4:3] of registers 16, 32 and 48 are used to enable port-based priority for ports

1, 2 and 3, respectively.

802.1p-Based Priority

For 802.1p-based priority, the KSZ8863MLL/FLL/RLL examines the ingress (incoming) packets to determine whether they are tagged. If tagged, the 3-bit priority field in the VLAN tag is retrieved and compared against the “priority mapping” value, as specified by the registers 12 and 13. The “priority mapping” value is programmable.

The following figure illustrates how the 802.1p priority field is embedded in the 802.1Q VLAN tag.

September 2011 33 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Figure 6. 802.1p Priority Field Format

802.1p-based priority is enabled by bit [5] of registers 16, 32 and 48 for ports 1, 2 and 3, respectively.

The KSZ8863MLL/FLL/RLL provides the option to insert or remove the priority tagged frame's header at each individual egress port. This header, consisting of the 2 bytes VLAN Protocol ID (VPID) and the 2-byte Tag Control Information field

(TCI), is also referred to as the IEEE 802.1Q VLAN tag.

Tag Insertion

is enabled by bit [2] of the port registers control 0 and the register 194 to select which source port (ingress port) PVID can be inserted on the egress port for ports 1, 2 and 3, respectively. At the egress port, untagged packets are tagged with the ingress port’s default tag. The default tags are programmed in register sets {19,20}, {35,36} and {51,52} for ports 1, 2 and 3, respectively and the source port VID has to be inserted at selected egress ports by bit[5:0] of register

194. The KSZ8863MLL/FLL/RLL will not add tags to already tagged packets.

Tag Removal

is enabled by bit [1] of registers 16, 32 and 48 for ports 1, 2 and 3, respectively. At the egress port, tagged packets will have their 802.1Q VLAN Tags removed. The KSZ8863MLL/FLL/RLL will not modify untagged packets.

The CRC is recalculated for both tag insertion and tag removal.

802.1p Priority Field Re-mapping

is a QoS feature that allows the KSZ8863MLL/FLL/RLL to set the “User Priority

Ceiling” at any ingress port. If the ingress packet’s priority field has a higher priority value than the default tag’s priority field of the ingress port, the packet’s priority field is replaced with the default tag’s priority field.

DiffServ-Based Priority

DiffServ-based priority uses the ToS registers (registers 96 to 111) in the Advanced Control Registers section. The ToS priority control registers implement a fully decoded, 64-bit Differentiated Services Code Point (DSCP) register to determine packet priority from the 6-bit ToS field in the IP header. When the most significant 6 bits of the ToS field are fully decoded, the resultant of the 64 possibilities is compared with the corresponding bits in the DSCP register to determine priority.

Spanning Tree Support

To support spanning tree, port 3 is designated as the processor port.

The other ports (port 1 and port 2) can be configured in one of the five spanning tree states via “transmit enable”, “receive enable” and “learning disable” register settings in registers 18 and 34 for ports 1 and 2, respectively. The following table shows the port setting and software actions taken for each of the five spanning tree states.

September 2011 34 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Disable State

The port should not forward or receive any packets. Learning is disabled.

Blocking State

Only packets to the processor are forwarded. Learning is disabled.

Listening State

Only packets to and from the processor are forwarded.

Learning is disabled.

Learning State

Only packets to and from the processor are forwarded.

Learning is enabled.

Forwarding State

Packets are forwarded and received normally. Learning is enabled.

Port Setting

“transmit enable = 0, receive enable

= 0, learning disable =1”

Port Setting

“transmit enable = 0, receive enable

= 0, learning disable =1”

Port Setting

“transmit enable = 0, receive enable

= 0, learning disable =1”

Software Action

The processor should not send any packets to the port. The switch may still send specific packets to the processor (packets that match some entries in the “static MAC table” with “overriding bit” set) and the processor should discard those packets. Address learning is disabled on the port in this state.

Port Setting

“transmit enable = 0, receive enable

= 0, learning disable = 0”

Port Setting

“transmit enable = 1, receive enable = 1, learning disable = 0”

Software Action

The processor should not send any packets to the port(s) in this state. The processor should program the “Static MAC table” with the entries that it needs to receive (for example, BPDU packets). The “overriding” bit should also be set so that the switch will forward those specific packets to the processor. Address learning is disabled on the port in this state.

Software Action

The processor should program the “Static MAC table” with the entries that it needs to receive (for example, BPDU packets). The “overriding” bit should be set so that the switch will forward those specific packets to the processor.

The processor may send packets to the port(s) in this state. See “Tail

Tagging Mode” for details. Address learning is disabled on the port in this state.

Software Action

The processor should program the “Static MAC table” with the entries that it needs to receive (for example, BPDU packets). The “overriding” bit should be set so that the switch will forward those specific packets to the processor.

The processor may send packets to the port(s) in this state. See “Tail

Tagging Mode” for details. Address learning is enabled on the port in this state.

Software Action

The processor programs the “Static MAC table” with the entries that it needs to receive (for example, BPDU packets). The “overriding” bit is set so that the switch forwards those specific packets to the processor. The processor can send packets to the port(s) in this state. See “Tail Tagging Mode” for details.

Address learning is enabled on the port in this state.

Table 12. Spanning Tree States

Rapid Spanning Tree Support

There are three operational states of the Discarding, Learning, and Forwarding assigned to each port for RSTP:

Discarding ports do not participate in the active topology and do not learn MAC addresses.

Discarding state: the state includs three states of the disable, blocking and listening of STP.

Port setting: "transmit enable = 0, receive enable = 0, learning disable = 1."

Software action: the processor should not send any packets to the port. The switch may still send specific packets to the processor (packets that match some entries in the static table with “overriding bit” set) and the processor should discard those packets. When disable the port’s learning capability (learning disable=’1’), set the register 2 bit 5 and bit 4 will flush rapidly the port related entries in the dynamic MAC table and static MAC table.

Note: processor is connected to port 3 via MII interface. Address learning is disabled on the port in this state.

Ports in Learning states learn MAC addresses, but do not forward user traffic.

Learning state: only packets to and from the processor are forwarded. Learning is enabled.

Port setting: “transmit enable = 0, receive enable = 0, learning disable = 0.”

Software action: The processor should program the static MAC table with the entries that it needs to receive (e.g., BPDU packets). The “overriding” bit should be set so that the switch will forward those specific packets to the processor. The processor may send packets to the port(s) in this state, see “Tail Tagging Mode” section for details. Address learning is enabled on the port in this state.

September 2011 35 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Ports in Forwarding states fully participate in both data forwarding and MAC learning.

Forwarding state: packets are forwarded and received normally. Learning is enabled.

Port setting: “transmit enable = 1, receive enable = 1, learning disable = 0.”

Software action: The processor should program the static MAC table with the entries that it needs to receive (e.g., BPDU packets). The “overriding” bit should be set so that the switch will forward those specific packets to the processor. The processor may send packets to the port(s) in this state, see “Tail Tagging Mode” section for details. Address learning is enabled on the port in this state.

RSTP uses only one type of BPDU called RSTP BPDUs. They are similar to STP Configuration BPDUs with the exception of a type field set to “version 2” for RSTP and “version 0” for STP, and a flag field carrying additional information.

Tail Tagging Mode

The Tail Tag is only seen and used by the port 3 interface, which should be connected to a processor. It is an effective way to retrieve the ingress port information for spanning tree protocol IGMP snooping and other applications. The Bit 1 and bit 0 in the one byte tail tagging is used to indicate the source/destination port in port 3. Bit 3 and bit 2 are used for the priority setting of the ingress frame in port 3. Other bits are not used. The Tail Tag feature is enable by setting register 3 bit 6.

Ingress to Port 3 (Host -> KSZ8863MML)

Bit [1,0]

0,0

Figure 7. Tail Tag Frame Format

Destination Port

Normal (Address Look up)

1,1

Bit [3,2]

Port 1 and 2

Frame Priority

Egress from Port 3 (KSZ8863MML->Host)

Bit [0] Source Port

Figure 8. Tail Tag Rules

September 2011 36 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

IGMP Support

For Internet Group Management Protocol (IGMP) support in layer 2, the KSZ8863MLL/FLL/RLL provides two components:

IGMP Snooping

The KSZ8863MLL/FLL/RLL traps IGMP packets and forwards them only to the processor (port 3). The IGMP packets are identified as IP packets (either Ethernet IP packets, or IEEE 802.3 SNAP IP packets) with IP version = 0x4 and protocol version number = 0x2.

IGMP Send Back to the Subscribed Port

Once the host responds the received IGMP packet, the host should knows the original IGMP ingress port and send back the IGMP packet to this port only, otherwise this IGMP packet will be broadcasted to all port to downgrade the performance.

Enable the tail tag mode, the host will know the IGMP packet received port from tail tag bits [0] and can send back the response IGMP packet to this subscribed port by setting the bits [1,0] in the tail tag. Enable “Tail tag mode” by setting

Register 3 bit 6. The tail tag will be removed automatically when the IGMP packet is sent out from the subscribed port.

Port Mirroring Support

KSZ8863MLL/FLL/RLL supports “Port Mirroring” comprehensively as:

“receive only” mirror on a port

All the packets received on the port are mirrored on the sniffer port. For example, port 1 is programmed to be “receive sniff” and port 3 is programmed to be the “sniffer port”. A packet received on port 1 is destined to port 2 after the internal lookup. The KSZ8863MLL/FLL/RLL forwards the packet to both port 2 and port 3. The KSZ8863MLL/FLL/RLL can optionally even forward “bad” received packets to the “sniffer port”.

“transmit only” mirror on a port

All the packets transmitted on the port are mirrored on the sniffer port. For example, port 1 is programmed to be

“transmit sniff” and port 3 is programmed to be the “sniffer port”. A packet received on port 2 is destined to port 1 after the internal lookup. The KSZ8863MLL/FLL/RLL forwards the packet to both port 1 and port 3.

“receive and transmit” mirror on two ports

All the packets received on port A and transmitted on port B are mirrored on the sniffer port. To turn on the “AND” feature, set register 5 bit [0] to ‘1’. For example, port 1 is programmed to be “receive sniff”, port 2 is programmed to be

“transmit sniff”, and port 3 is programmed to be the “sniffer port”. A packet received on port 1 is destined to port 2 after the internal lookup. The KSZ8863MLL/FLL/RLL forwards the packet to both port 2 and port 3.

Multiple ports can be selected as “receive sniff” or “transmit sniff”. In addition, any port can be selected as the “sniffer port”.

All these per port features can be selected through registers 17, 33 and 49 for ports 1, 2 and 3, respectively.

Rate Limiting Support

The KSZ8863MLL/FLL/RLL provides a fine resolution hardware rate limiting from 64Kbps to 99Mbps. The rate step is

64Kbps when the rate range is from 64Kbps to 960Kbps and 1Mbps for 1Mbps to 100Mbps(100BT) or to 10Mbps(10BT)

(refer to Data Rate Limit Table). The rate limit is independently on the “receive side” and on the “transmit side” on a per port basis. For 10BASE-T, a rate setting above 10 Mbps means the rate is not limited. On the receive side, the data receive rate for each priority at each port can be limited by setting up Ingress Rate Control Registers. On the transmit side, the data transmit rate for each priority queue at each port can be limited by setting up Egress Rate Control Registers. The size of each frame has options to include minimum IFG (Inter Frame Gap) or Preamble byte, in addition to the data field

(from packet DA to FCS).

For ingress rate limiting, KSZ8863MLL/FLL/RLL provides options to selectively choose frames from all types, multicast, broadcast, and flooded unicast frames. The KSZ8863MLL/FLL/RLL counts the data rate from those selected type of frames. Packets are dropped at the ingress port when the data rate exceeds the specified rate limit.

For egress rate limiting, the Leaky Bucket algorithm is applied to each output priority queue for shaping output traffic. Inter frame gap is stretched on a per frame base to generate smooth, non-burst egress traffic. The throughput of each output priority queue is limited by the egress rate specified.

If any egress queue receives more traffic than the specified egress rate throughput, packets may be accumulated in the output queue and packet memory. After the memory of the queue or the port is used up, packet dropping or flow control will be triggered. As a result of congestion, the actual egress rate may be dominated by flow control/dropping at the ingress end, and may be therefore slightly less than the specified egress rate.

September 2011 37 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

To reduce congestion, it is a good practice to make sure the egress bandwidth exceeds the ingress bandwidth.

Unicast MAC Address Filtering

The unicast MAC address filtering function works in conjunction with the static MAC address table. First, the static MAC address table is used to assign a dedicated MAC address to a specific port. If a unicast MAC address is not recorded in the static table, it is also not learned in the dynamic MAC table. The KSZ8863MLL/FLL/RLL is then configured with the option to either filter or forward unicast packets for an unknown MAC address. This option is enabled and configured in register 14.

This function is useful in preventing the broadcast of unicast packets that could degrade the quality of the port in applications such as voice over Internet Protocol (VoIP).

Configuration Interface

The KSZ8863MLL/FLL/RLL can operate as both a managed switch and an unmanaged switch.

In unmanaged mode, the KSZ8863MLL/FLL/RLL is typically programmed using an EEPROM. If no EEPROM is present, the KSZ8863MLL/FLL/RLL is configured using its default register settings. Some default settings are configured via strapin pin options. The strap-in pins are indicated in the “Pin Description and I/O Assignment” table.

I

2

C Master Serial Bus Configuration

With an additional I

2

C (“2-wire”) EEPROM, the KSZ8863MLL/FLL/RLL can perform more advanced switch features like

“broadcast storm protection” and “rate control” without the need of an external processor.

For KSZ8863MLL/FLL/RLL I

2

C Master configuration, the EEPROM stores the configuration data for register 0 to register

120 (as defined in the KSZ8863MLL/FLL/RLL register map) with the exception of the “Read Only” status registers. After the de-assertion of reset, the KSZ8863MLL/FLL/RLL sequentially reads in the configuration data for all 121 registers, starting from register 0.

Figure 9. EEPROM Configuration Timing Diagram

The following is a sample procedure for programming the KSZ8863MLL/FLL/RLL with a pre-configured EEPROM:

1. Connect the KSZ8863MLL/FLL/RLL to the EEPROM by joining the SCL and SDA signals of the respective devices.

2. Enable C master mode by setting the KSZ8863MLL/FLL/RLL strap-in pins, P2LED[1:0] to “00”.

3. Check to ensure that the KSZ8863MLL/FLL/RLL reset signal input, RSTN, is properly connected to the external reset source at the board level.

4. Program the desired configuration data into the EEPROM.

5. Place the EEPROM on the board and power up the board.

6. Assert an active-low reset to the RSTN pin of the KSZ8863MLL/FLL/RLL. After reset is de-asserted, the

KSZ8863MLL/FLL/RLL begins reading the configuration data from the EEPROM. The KSZ8863MLL/FLL/RLL checks that the first byte read from the EEPROM is “88”. If this value is correct, EEPROM configuration continues.

If not, EEPROM configuration access is denied and all other data sent from the EEPROM is ignored by the

KSZ8863MLL/FLL/RLL.

September 2011 38 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

I2C Slave Serial Bus Configuration

In managed mode, the KSZ8863MLL/FLL/RLL can be configured as an I

2

C slave device. In this mode, an I

2

C master device (external controller/CPU) has complete programming access to the KSZ8863MLL/FLL/RLL’s 198 registers.

Programming access includes the Global Registers, Port Registers, Advanced Control Registers and indirect access to the “Static MAC Table”, “VLAN Table”, “Dynamic MAC Table,” and “MIB Counters.” The tables and counters are indirectly accessed via registers 121 to 131.

In I

2

C slave mode, the KSZ8863MLL/FLL/RLL operates like other I

2

C slave devices. Addressing the

KSZ8863MLL/FLL/RLL’s 8-bit registers is similar to addressing Atmel’s AT24C02 EEPROM’s memory locations. Details of

I

2

C read/write operations and related timing information can be found in the AT24C02 Datasheet.

Two fixed 8-bit device addresses are used to address the KSZ8863MLL/FLL/RLL in I

2

C slave mode. One is for read; the other is for write. The addresses are as follow:

1011_1111 <read>

1011_1110 <write>

The following is a sample procedure for programming the KSZ8863MLL/FLL/RLL using the I

2

C slave serial bus:

1. Enable C slave mode by setting the KSZ8863MLL/FLL/RLL strap-in pins P2LED[1:0] to “01”.

2. Power up the board and assert reset to the KSZ8863MLL/FLL/RLL. Configure the desired register settings in the

KSZ8863MLL/FLL/RLL, using the I

2

C write operation.

3. Read back and verify the register settings in the KSZ8863MLL/FLL/RLL, using the I

2

C read operation.

Some of the configuration settings, such as “Aging enable”, “Auto Negotiation Enable”, “Force Speed” and “Power down” can be programmed after the switch has been started.

SPI Slave Serial Bus Configuration

In managed mode, the KSZ8863MLL/FLL/RLL can be configured as a SPI slave device. In this mode, a SPI master device (external controller/CPU) has complete programming access to the KSZ8863MLL/FLL/RLL’s 198 registers.

Programming access includes the Global Registers, Port Registers, Advanced Control Registers and indirect access to the “Static MAC Table”, “VLAN Table”, “Dynamic MAC Table” and “MIB Counters”. The tables and counters are indirectly accessed via registers 121 to 131.

The KSZ8863MLL/FLL/RLL supports two standard SPI commands: ‘0000_0011’ for data read and ‘0000_0010’ for data write. SPI multiple read and multiple write are also supported by the KSZ8863MLL/FLL/RLL to expedite register read back and register configuration, respectively.

SPI multiple read is initiated when the master device continues to drive the KSZ8863MLL/FLL/RLL SPISN input pin (SPI

Slave Select signal) low after a byte (a register) is read. The KSZ8863MLL/FLL/RLL internal address counter increments automatically to the next byte (next register) after the read. The next byte at the next register address is shifted out onto the KSZ8863MLL/FLL/RLL SPIQ output pin. SPI multiple read continues until the SPI master device terminates it by deasserting the SPISN signal to the KSZ8863MLL/FLL/RLL.

Similarly, SPI multiple write is initiated when the master device continues to drive the KSZ8863MLL/FLL/RLL SPISN input pin low after a byte (a register) is written. The KSZ8863MLL/FLL/RLL internal address counter increments automatically to the next byte (next register) after the write. The next byte that is sent from the master device to the KSZ8863MLL/FLL/RLL

SDA input pin is written to the next register address. SPI multiple write continues until the SPI master device terminates it by de-asserting the SPISN signal to the KSZ8863MLL/FLL/RLL.

For both SPI multiple read and multiple write, the KSZ8863MLL/FLL/RLL internal address counter wraps back to register address zero once the highest register address is reached. This feature allows all 198 KSZ8863MLL/FLL/RLL registers to be read, or written with a single SPI command from any initial register address.

September 2011 39 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

The KSZ8863MLL/FLL/RLL is capable of supporting a SPI bus.

The following is a sample procedure for programming the KSZ8863MLL/FLL/RLL using the SPI bus:

1. At the board level, connect the KSZ8863MLL/FLL/RLL pins as follows:

KSZ8863MLL/FLL/RLL Pin #

39 SPI Slave Select

36

37

SPISN

SCL

(SPIC)

SDA

(SPID)

SPI Clock

SPI Data

(Master output; Slave input)

Table 13. SPI Connections

2. Enable SPI slave mode by setting the KSZ8863MLL/FLL/RLL strap-in pins P2LED[1:0] to “10”.

3. Power up the board and assert reset to the KSZ8863MLL/FLL/RLL.

4. Configure the desired register settings in the KSZ8863MLL/FLL/RLL, using the SPI write or multiple write command.

5. Read back and verify the register settings in the KSZ8863MLL/FLL/RLL, using the SPI read or multiple read command.

Some of the configuration settings, such as “Aging enable”, “Auto Negotiation Enable”, “Force Speed” and “Power down” can be programmed after the switch has been started.

The following four figures illustrate the SPI data cycles for “Write”, “Read”, “Multiple Write” and “Multiple Read”. The read data is registered out of SPIQ on the falling edge of SPIC, and the data input on SPID is registered on the rising edge of

SPIC.

Figure 10. SPI Write Data Cycle

SPIS_N

SPIC

SPID

SPIQ

X 0 0 0 0 0 0 1 1 A7 A6 A5 A4 A3 A2 A1 A0

D7 D6 D5 D4 D3 D2 D1 D0

READ COMMAND READ ADDRESS READ DATA

September 2011

Figure 11. SPI Read Data Cycle

40 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Figure 12. SPI Multiple Write

Figure 13. SPI Multiple Read

September 2011 41 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Loopback Support

The KSZ8863MLL/FLL/RLL provides loopback support for remote diagnostic of failure. In loopback mode, the speed at both PHY ports needs to be set to 100BASE-TX. Two types of loopback are supported: Far-end Loopback and Near-end

(Remote) Loopback.

Far-end Loopback

Far-end loopback is conducted between the KSZ8863MLL/FLL/RLL’s two PHY ports. The loopback is limited to few package a time for diagnosis purpose and can not support large traffic. The loopback path starts at the “Originating.” PHY port’s receive inputs (RXP/RXM), wraps around at the “loopback” PHY port’s PMD/PMA, and ends at the “Originating”

PHY port’s transmit outputs (TXP/TXM).

Bit [0] of registers 29 and 45 is used to enable far-end loopback for ports 1 and 2, respectively. Alternatively, the MII

Management register 0, bit [14] can be used to enable far-end loopback.

The far-end loopback path is illustrated in the following figure.

September 2011

Figure 14. Far-End Loopback Path

42 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL//RLL

Near-end (Remote) Loopback

Near-end (Remote) loopback is conducted at either PHY port 1 or PHY port 2.of the KSZ8863MLL/FLL/RLL. The loopback path starts at the PHY port’s receive inputs (RXPx/RXMx), wraps around at the same PHY port’s PMD/PMA, and ends at the PHY port’s transmit outputs (TXPx/TXMx).

Bit [1] of registers 26 and 42 is used to enable near-end loopback for ports 1 and 2, respectively. Alternatively, the MII

Management register 31, bit [1] can be used to enable near-end loopback.

The near-end loopback paths are illustrated in the following figure.

Figure 15. Near-end (Remote) Loopback Path

September 2011 43 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

MII Management (MIIM) Registers

The MIIM interface is used to access the MII PHY registers defined in this section. The SPI, I

2

C, and SMI interfaces can also be used to access some of these registers. The latter three interfaces use a different mapping mechanism than the

MIIM interface.

The “PHYADs” by defaults are assigned “0x1” for PHY1 (port 1) and “0x2” for PHY2 (port 2). Additionally, these

“PHYADs” can be programmed to the PHY addresses specified in bits[7:3] of Register 15 (0x0F): Global Control 13.

The “REGAD” supported are 0x0-0x5, 0x1D and 0x1F.

Register Number

PHYAD = 0x1, REGAD = 0x0

PHYAD = 0x1, REGAD = 0x1

PHYAD = 0x1, REGAD = 0x2

PHYAD = 0x1, REGAD = 0x3

PHYAD = 0x1, REGAD = 0x4

PHYAD = 0x1, REGAD = 0x5

PHYAD = 0x1, 0x6 – 0x1C

PHYAD = 0x1, 0x1D

PHYAD = 0x1, 0x1E

PHYAD = 0x1, 0x1F

PHYAD = 0x2, REGAD = 0x0

PHYAD = 0x2, REGAD = 0x1

PHYAD = 0x2, REGAD = 0x2

PHYAD = 0x2, REGAD = 0x3

PHYAD = 0x2, REGAD = 0x4

PHYAD = 0x2, REGAD = 0x5

PHYAD = 0x2, 0x6 – 0x1C

PHYAD = 0x2, 0x1D

PHYAD = 0x2, 0x1E

PHYAD = 0x2, 0x1F

Description

PHY1 Basic Control Register

PHY1 Basic Status Register

PHY1 Physical Identifier I

PHY1 Physical Identifier II

PHY1 Auto-Negotiation Advertisement Register

PHY1 Auto-Negotiation Link Partner Ability Register

PHY1 Not supported

PHY1 Not supported

PHY1 Not supported

PHY1 Special Control/Status

PHY2 Basic Control Register

PHY2 Basic Status Register

PHY2 Physical Identifier I

PHY2 Physical Identifier II

PHY2 Auto-Negotiation Advertisement Register

PHY2 Auto-Negotiation Link Partner Ability Register

PHY2 Not supported

PHY2 LinkMD Control/Status

PHY2 Not supported

PHY2 Special Control/Status

September 2011 44 M9999-092111-1.4

Micrel, Inc.

PHY1 Register 0 (PHYAD = 0x1, REGAD = 0x0): MII Basic Control

PHY2 Register 0 (PHYAD = 0x2, REGAD = 0x0): MII Basic Control

Bit Name

15

14

Soft reset

Loopback

RO NOT SUPPORTED

R/W = 1, Perform loopback, as indicated:

Port 1 Loopback (reg. 29, bit 0 = ‘1’)

Start: RXP2/RXM2 (port 2)

Loopback: PMD/PMA of port 1’s PHY

End: TXP2/TXM2 (port 2)

Port 2 Loopback (reg. 45, bit 0 = ‘1’)

Start: RXP1/RXM1 (port 1)

Loopback: PMD/PMA of port 2’s PHY

End: TXP1/TXM1 (port 1)

=0, Normal operation

=1, 100 Mbps

=0, 10 Mbps

12 AN R/W

=0, Auto-negotiation disabled

=1, Power down

=0, Normal operation

10 Isolate

9 Restart R/W

=0, Normal operation

8

7

Force full duplex

Collision test

R/W

RO

=1, Full duplex

=0, Half duplex

NOT SUPPORTED

6 Reserved

5 Hp_mdix

RO

1 = HP Auto MDI/MDI-X mode

0 = Micrel Auto MDI/MDI-X mode

4 Force R/W

=0, Normal operation (transmit on TXP / TXM pins)

2

1

Disable far-end fault

Disable transmit

R/W

R/W

=0, Enable auto MDI-X

=1, Disable far-end fault detection

=0, Normal operation

=1, Disable transmit

=0, Normal operation

=1, Disable LED

=0, Normal operation

KSZ8863MLL/FLL/RLL

0

0 Reg. 29, bit 0

Reg. 45, bit 0

0

0

0

1

Reg. 28, bit 6

Reg. 44, bit 6

Reg. 28, bit 7

Reg. 44, bit 7

0 Reg. 29, bit 3

Reg. 45, bit 3

0

0

0

0

0

Reg. 29, bit 5

Reg. 45, bit 5

Reg. 28, bit 5

Reg. 44, bit 5

0

0

1 Reg. 31, bit 7

Reg. 47, bit 7

0 Reg. 29, bit 1

Reg. 45, bit 1

Reg. 29, bit 2

Reg. 45, bit 2

Reg. 29, bit 4

Reg. 29, bit 6

Reg. 45, bit 6

Reg. 29, bit 7

Reg. 45, bit 7

September 2011 45 M9999-092111-1.4

Micrel, Inc.

PHY1 Register 1 (PHYAD = 0x1, REGAD = 0x1): MII Basic Status

PHY2 Register 1 (PHYAD = 0x2, REGAD = 0x1): MII Basic Status

Bit Name

15

14

T4 capable

100 Full capable

13 100 Half capable

12

11

10 Full capable

10 Half capable

10-7 Reserved

6

Preamble suppressed

RO =0, Not 100 BASE-T4 capable

RO =1, 100BASE-TX full duplex capable

=0, Not capable of 100BASE-TX full duplex

RO =1, 100BASE-TX half duplex capable

=0, Not 100BASE-TX half duplex capable

RO =1, 10BASE-T full duplex capable

=0, Not 10BASE-T full duplex capable

RO =1, 10BASE-T half duplex capable

=0, Not 10BASE-T half duplex capable

RO

=0, Auto-negotiation not completed

=0, No far-end fault detected

1

0

=1, Auto-negotiation capable

=0, Not auto-negotiation capable

2 Link RO

=0, Link is down

Jabber test

Extended capable

RO NOT SUPPORTED

RO =0, Not extended register capable

PHY1 Register 2 (PHYAD = 0x1, REGAD = 0x2): PHYID High

PHY2 Register 2 (PHYAD = 0x2, REGAD = 0x2): PHYID High

Bit Name

15-0 PHYID high RO High order PHYID bits

PHY1 Register 3 (PHYAD = 0x1, REGAD = 0x3): PHYID Low

PHY2 Register 3 (PHYAD = 0x2, REGAD = 0x3): PHYID Low

Bit Name

15-0 PHYID low RO Low order PHYID bits

0

Default

0x0022

Default

0x1430

KSZ8863MLL/FLL/RLL

0000

0

0

0

1

0

0

0

Reg. 30, bit 6

Reg. 46, bit 6

Reg. 31, bit 0

Reg. 28, bit 7

Reg. 44, bit 7

Reg. 30, bit 5

Reg. 46, bit 5

September 2011 46 M9999-092111-1.4

Micrel, Inc.

PHY1 Register 4 (PHYAD = 0x1, REGAD = 0x4): Auto-Negotiation Advertisement Ability

KSZ8863MLL/FLL/RLL

PHY2 Register 4 (PHYAD = 0x2, REGAD = 0x4): Auto-Negotiation Advertisement Ability

Bit Name

15 Next page RO NOT SUPPORTED

14 Reserved RO

13 Remote fault RO NOT SUPPORTED

12-11 Reserved

10 Pause

RO

=1, Advertise pause ability

=0, Do not advertise pause ability

9 Reserved R/W

8 Adv 100 Full R/W =1, Advertise 100 full duplex ability

=0, Do not advertise 100 full duplex ability

7 Adv 100 Half

6

5

Adv 10 Full

Adv 10 Half

R/W =1, Advertise 100 half duplex ability

=0, Do not advertise 100 half duplex ability

R/W

=1, Advertise 10 full duplex ability

=0, Do not advertise 10 full duplex ability

R/W =1, Advertise 10 half duplex ability

=0, Do not advertise 10 half duplex ability

Default Reference

0

0

0

00

1 Reg. 28, bit 4

Reg. 44, bit 4

0

1 Reg. 28, bit 3

Reg. 44, bit 3

1

1

Reg. 28, bit 2

Reg. 44, bit 2

Reg. 28, bit 1

Reg. 44, bit 1

1 Reg. 28, bit 0

Reg. 44, bit 0

00001

PHY1 Register 5 (PHYAD = 0x1, REGAD = 0x5): Auto-Negotiation Link Partner Ability

PHY2 Register 5 (PHYAD = 0x2, REGAD = 0x5): Auto-Negotiation Link Partner Ability

Bit Name

15

14

13

Next page

LP ACK

Remote fault

12-11 Reserved

10 Pause

9 Reserved RO

8 Adv 100 Full RO Link partner 100 full capability

7

6

5

Adv 100 Half

Adv 10 Full

Adv 10 Half

4-0 Reserved

RO NOT SUPPORTED

RO NOT SUPPORTED

RO NOT SUPPORTED

RO

RO Link partner pause capability

RO Link partner 100 half capability

RO Link partner 10 full capability

RO Link partner 10 half capability

RO

Default Reference

0

0

0

00

0 Reg. 30, bit 4

Reg. 46, bit 4

0

0 Reg. 30, bit 3

Reg. 46, bit 3

0 Reg. 30, bit 2

Reg. 46, bit 2

0

0

Reg. 30, bit 1

Reg. 46, bit 1

Reg. 30, bit 0

Reg. 46, bit 0

00000

September 2011 47 M9999-092111-1.4

Micrel, Inc.

PHY1 Register 29 (PHYAD = 0x1, REGAD = 0x1D): Not support

KSZ8863MLL/FLL/RLL

PHY2 Register 29 (PHYAD = 0x2, REGAD = 0x1D): LinkMD Control/Status

Bit Name R/W Description

15 Vct_enable R/W =1, Enable cable diagnostic. After VCT

(SC) test has completed, this bit will be selfcleared.

=0, Indicate cable diagnostic test (if enabled) has completed and the status information is valid for read.

14-13 Vct_result RO

12 Vct 10M Short RO

=00, Normal condition

=01, Open condition detected in cable

=10, Short condition detected in cable

=11, Cable diagnostic test has failed

=1, Less than 10 meter short

11-9 Reserved RO Reserved

8-0 Vct_fault_count RO Distance to the fault.

It’s approximately

0.4m*vct_fault_count[8:0]

Default Reference

0 Reg. 42, bit 4

00 Reg 42, bit[6:5]

0 Reg. 42, bit 7

000

{0, (0x00)} {(Reg. 42, bit 0),

(Reg. 43, bit[7:0])}

PHY1 Register 31 (PHYAD = 0x1, REGAD = 0x1F): PHY Special Control/Status

PHY2 Register 31 (PHYAD = 0x2, REGAD = 0x1F): PHY Special Control/Status

Bit Name

15-6 Reserved

5 Polrvs

RO Reserved

0 = polarity is not reversed

0 = MDI-X

1 = Force link pass

0 = Normal Operation

2 Pwrsave R/W

1 = Disable power saving

1 Remote

Loopback

R/W 1 = Perform Remote loopback, as follows:

Port 1 (reg. 26, bit 1 = ‘1’)

Start: RXP1/RXM1 (port 1)

Loopback: PMD/PMA of port 1’s

PHY

End: TXP1/TXM1 (port 1)

Port 2 (reg. 42, bit 1 = ‘1’)

Start: RXP2/RXM2 (port 2)

Loopback: PMD/PMA of port 2’s

PHY

End: TXP2/TXM2 (port 2)

0 = Normal Operation

0 Reserved R/W

Do not change the default value.

Default Reference

{(0x00),00}

0 Reg. 31, bit 5

Reg. 47, bit 5

Note: This bit is only valid for 10BT

0

0

Reg. 30, bit 7

Reg. 46, bit 7

Reg. 26, bit 3

Reg. 42, bit 3

1

0

Reg. 26, bit 2

Reg. 42, bit 2

Reg. 26, bit 1

Reg. 42, bit 1

0

September 2011 48 M9999-092111-1.4

Micrel, Inc.

Memory Map (8-bit Registers)

Global Registers

Register (Decimal) Register (Hex)

0-1

2-15

0x00-0x01

0x02-0x0F

Port Registers

Register (Decimal) Register (Hex)

16-29 0x10-0x1D

30-31

32-45

46-47

48-57

0x1E-0x1F

0x20-0x2D

0x2E-0x2F

0x30-0x39

Description

Chip ID Registers

Global Control Registers

Description

Port 1 Control Registers, including MII PHY Registers

Port 1 Status Registers, including MII PHY Registers

Port 2 Control Registers, including MII PHY Registers

Port 2 Status Registers, including MII PHY Registers

Port 3 Control Registers

63 0x3F Port 3 Status Register

Advanced Control Registers

Register (Decimal) Register (Hex)

96-111 0x60-0x6F

112-117 0x70-0x75

121-122

123-131

0x79-0x7A

0x7B-0x83

Description

TOS Priority Control Registers

Switch Engine’s MAC Address Registers

Indirect Access Control Registers

Indirect Data Registers

154-165

166

0x9A-0xA5

0xA6

Egress data rate limit

Device mode indicator

167-170 0xA7-0xAA Priority Packet Buffer Reserved

171-174 0xAB-0xAE PM Usage Flow Control Select Mode

175-186 0xAF-0xBA Split

187-188 0xBB-0xBC Link Change Interrupt register

189

192

194

195

0xBD

0xC0

0xC2

0xC3

Force Pause Off Iteration Limit Enable

Fiber Signal Threshold

Insert SRC PVID

Power Management and LED Mode

198 0xC6 Forward Invalid VID Frame and Host Mode

KSZ8863MLL/FLL/RLL

September 2011 49 M9999-092111-1.4

Micrel, Inc.

Register Description

Global Registers (Registers 0 – 15)

Register 0 (0x00): Chip ID0

Bit Name

7-0 Family ID RO Chip family

Register 1 (0x01): Chip ID1 / Start Switch

Bit Name

7-4

3-1

0

Chip ID

Revision ID

Start Switch

RO 0x3 is assigned to M series. (73M)

RO Revision ID

RW =1, start the switch (default)

0=, stop the switch

Register 2 (0x02): Global Control 0

Bit Name

7 New Back-off

Enable

R/W New back-off algorithm designed for UNH

=1, Enable

=0, Disable

6 Reserved RO

5 Flush Dynamic

MAC Table

R/W =1, enable flush dynamic MAC table for spanning tree application

=disable

4 Flush Static

MAC Table

R/W =1, enable flush static MAC table for spanning tree application

=disable,

3 Pass Flow

Control Packet

R/W = 1, switch will pass 802.1x “flow control” packets

=0, switch will drop 802.1x “flow control” packets

2 Reserved R/W

Do not change the default value.

1 Reserved R/W

Do not change the default value.

0 Reserved RO

KSZ8863MLL/FLL/RLL

Default

0x88

Default

0x3

-

1

Default

0

0

0

0

0

0

0

0

September 2011 50 M9999-092111-1.4

Micrel, Inc.

Register 3 (0x03): Global Control 1

Bit Name

7

Pass All

Frames

6 Port 3 Tail Tag

Mode Enable

5

4

3

IEEE 802.3x

Transmit

Direction Flow

Control Enable

IEEE 802.3x

Receive

Direction Flow

Control Enable

Frame Length

Field Check

R/W = 1, switch all packets including bad ones. Used solely for debugging purposes. Works in conjunction with sniffer mode only.

R/W =1, Enable port 3 tail tag mode.

=0, Disable.

R/W = 1, will enable transmit direction flow control feature.

= 0, will not enable transmit direction flow control feature. Switch will not generate any flow control (PAUSE) frame.

R/W = 1, will enable receive direction flow control feature.

= 0, will not enable receive direction flow control feature. Switch will not react to any flow control (PAUSE) frame it receives.

2

1

Aging Enable

R/W =1, will check frame length field in the IEEE packets. If the actual length does not match, the packet will be dropped (for Length/Type field < 1500).

=0, not check

R/W 1 = enable age function in the chip

0 = disable age function in the chip

R/W 1 = turn on fast age (800us)

0

Fast Age

Enable

Aggressive

Back-off

Enable

R/W 1 = enable more aggressive back off algorithm in half duplex mode to enhance performance. This is not an IEEE standard.

Register 4 (0x04): Global Control 2

Bit Name

7 Unicast

6

4

3

Port-VLAN

Mismatch

Discard

Multicast

Storm

Protection

Disable

R/W This feature is used with port-VLAN (described in reg. 17, reg. 33,

…)

= 1, all packets can not cross VLAN boundary

= 0, unicast packets (excluding unkown/multicast/ broadcast) can cross VLAN boundary

Note: Port mirroring is not supported if this bit is set to “0”.

R/W = 1, “Broadcast Storm Protection” does not include multicast packets. Only DA = FF-FF-FF-FF-FF-FF packets will be regulated.

= 0, “Broadcast Storm Protection” includes DA = FF-FF-FF-

FF-FF-FF and DA[40] = 1 packets.

Pressure = 1, carrier sense based backpressure is selected

Mode = 0, collision based backpressure is selected

Flow Control and Back

Pressure Fair

Mode

R/W = 1, fair mode is selected. In this mode, if a flow control port and a non-flow control port talk to the same destination port, packets from the non-flow control port may be dropped. This is to prevent the flow control port from being flow controlled for an extended period of time.

= 0, in this mode, if a flow control port and a non-flow control port talk to the same destination port, the flow control port will be flow controlled. This may not be “fair” to the flow control port.

No Excessive

Collision Drop

R/W = 1, the switch will not drop packets when 16 or more collisions occur.

= 0, the switch will drop packets when 16 or more collisions occur.

KSZ8863MLL/FLL/RLL

Default

0

0

1

1

0

1

0

0

Default

1

1

1

1

0

September 2011 51 M9999-092111-1.4

Micrel, Inc.

Bit Name

2 Huge Packet

Support

R/W = 1, will accept packet sizes up to 1916 bytes (inclusive). This bit setting will override setting from bit 1 of this register.

1 Legal

Maximum

Packet Size

Check Enable

R/W

= 0, the max packet size will be determined by bit 1 of this register.

= 0, will accept packet sizes up to 1536 bytes (inclusive).

= 1, 1522 bytes for tagged packets, 1518 bytes for untagged packets. Any packets larger than the specified value will be dropped.

0 Reserved R/W

Do not change the default value.

Register 5 (0x05): Global Control 3

Bit Name

7 802.1Q VLAN

Enable

6

5

IGMP Snoop

Enable on

Switch MII

Interface

Reserved

R/W = 1, 802.1Q VLAN mode is turned on. VLAN table needs to set up before the operation.

= 0, 802.1Q VLAN is disabled.

R/W =1, IGMP snoop is enabled. All IGMP packets will be forwarded to the Switch MII port.

=0, IGMP snoop is disabled.

4

3

2

1

0

Reserved

Weighted

Fair Queue

Enable

Reserved

Reserved

Sniff Mode

Select

RO Reserved

Do not change the default values.

RO Reserved

Do not change the default values.

R/W = 0, Priority method set by the registers 175-186 bit [7]=0 for port 1, port 2 and port 3.

= 1, Weighted Fair Queueing enabled. When all four queues have packets waiting to transmit, the bandwidth allocation is q3:q2:q1:q0

= 8:4:2:1.

If any queues are empty, the highest non-empty queue gets one more weighting. For example, if q2 is empty, q3:q2:q1:q0 becomes

(8+1):0:2:1.

RO Reserved

Do not change the default values.

RO Reserved

Do not change the default values.

R/W = 1, will do RX AND TX sniff (both source port and destination port need to match)

= 0, will do RX OR TX sniff (either source port or destination port needs to match). This is the mode used to implement RX only sniff.

KSZ8863MLL/FLL/RLL

Default

0

0

0

Default

0

0

0

0

0

0

0

0

September 2011 52 M9999-092111-1.4

Micrel, Inc.

Register 6 (0x06): Global Control 4

Bit Name

7 Reserved

Reserved

Do not change the default values.

6 Switch MII Half

Duplex Mode

R/W = 1, enable MII interface half-duplex mode.

= 0, enable MII interface full-duplex mode.

5

4

Switch MII

Flow Control

Enable

Switch MII

10BT

R/W = 1, enable full duplex flow control on Switch MII interface.

= 0, disable full duplex flow control on Switch MII interface.

3

2-0

Null VID

Replacement

Broadcast

Storm

Protection

Rate

(1)

Bit [10:8]

R/W = 1, the switch interface is in 10Mbps mode

= 0, the switch interface is in 100Mbps mode

R/W = 1, will replace NULL VID with port VID (12 bits)

= 0, no replacement for NULL VID

R/W This register along with the next register determines how many “64 byte blocks” of packet data are allowed on an input port in a preset period. The period is 67ms for 100BT or 500ms for 10BT. The default is 1%.

Register 7 (0x07): Global Control 5

Bit Name

7-0 Broadcast

Storm

Protection

Rate

(1)

Bit [7:0]

R/W This register along with the previous register determines how many

“64 byte blocks” of packet data are allowed on an input port in a preset period. The period is 67ms for 100BT or 500ms for 10BT.

The default is 1%.

Note:

(1) 100BT Rate: 148,800 frames/sec * 67 ms/interval * 1% = 99 frames/interval (approx.) = 0x63

KSZ8863MLL/FLL/RLL

Default

0

0

1

0

0

000

Default

0x63

September 2011 53 M9999-092111-1.4

Micrel, Inc.

Register 8 (0x08): Global Control 6

Bit Name

7-0

Factory

Testing

RO Reserved

Do not change the default values.

Register 9 (0x09): Global Control 7

Bit Name

7-0 Factory

Testing

RO Reserved

Do not change the default values.

Register 10 (0x0A): Global Control 8

Bit Name

7-0 Factory

Testing

RO Reserved

Do not change the default values.

Register 11 (0x0B): Global Control 9

Bit Name

7-6 CPU interface

Clock

Selection

5-4

3-2

1

0

Reserved

Reserved

Reserved

Reserved

R/W =00, 31.25MHz supports SPI speed below 6MHz

=01, 62.5MHz supports SPI speed between 6MHz to 12.5MHz

=10, 125MHz supports SPI speed above 12.5MHz

Note: Lower clock speed will save more power consumption, It is better set to to 31.25MHz if SPI doesn’t request a high speed.

RO N/A Don’t change

RO N/A Don’t change

RO N/A Don’t change

RO N/A Don’t change

Register 12 (0x0C): Global Control 10

Bit Name R/W Description

7-6 Tag_0x3 R/W IEEE 802.1p mapping. The value in this field is used as the frame’s priority when its IEEE 802.1p tag has a value of 0x3.

5-4 Tag_0x2 R/W IEEE 802.1p mapping. The value in this field is used as the frame’s priority when its IEEE 802.1p tag has a value of 0x2.

3-2 Tag_0x1 R/W IEEE 802.1p mapping. The value in this field is used as the frame’s priority when its IEEE 802.1p tag has a value of 0x1.

1-0 Tag_0x0 R/W IEEE 802.1p mapping. The value in this field is used as the frame’s priority when its IEEE 802.1p tag has a value of 0x0.

Register 13 (0x0D): Global Control 11

Bit Name R/W

IEEE 802.1p mapping. The value in this field is used as the frame’s priority when its IEEE 802.1p tag has a value of 0x7.

IEEE 802.1p mapping. The value in this field is used as the frame’s priority when its IEEE 802.1p tag has a value of 0x6.

3-2 Tag_0x5 R/W priority when its IEEE 802.1p tag has a value of 0x5.

KSZ8863MLL/FLL/RLL

Default

0x00

Default

0x24

Default

0x35

Default

10

00

10

0

0

Default

01

01

00

00

Default

11

11

10

10 priority when its IEEE 802.1p tag has a value of 0x4.

September 2011 54 M9999-092111-1.4

Micrel, Inc.

Register 14 (0x0E): Global Control 12

Bit Name R/W

7

Unknown

Packet

Default

Port

Enable

R/W Send packets with unknown destination MAC addresses to specified port(s) in bits [2:0] of this register.

0 = disable

1 = enable

6 Drive

Strength of I/O Pad

0: 8mA

Do not change the default values.

2-0

Do not change the default values.

Unknown

Packet

Default

Port

Do not change the default values.

R/W

Specify which port(s) to send packets with unknown destination MAC addresses. This feature is enabled by bit [7] of this register.

Bit 2 stands for port 3.

Bit 1 stands for port 2.

Bit 0 stands for port 1.

An ‘1’ includes a port.

An ‘0’ excludes a port.

Register 15 (0x0F): Global Control 13

Bit Name R/W

7-3 PHY

Address

R/W 00000 : N/A

00001 : Port 1 PHY address is 0x1

00010 : Port 1 PHY address is 0x2

11101 : Port 1 PHY address is 0x29

11110 : N/A

11111 : N/A

Note:

Port 2 PHY address = (Port 1 PHY address) + 1

Reserved

Do not change the default values.

KSZ8863MLL/FLL/RLL

Default

0

1

0

0

0

111

Default

00001

000

September 2011 55 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

Port Registers (Registers 16 – 95)

The following registers are used to enable features that are assigned on a per port basis. The register bit assignments are the same for all ports, but the address for each port is different, as indicated.

Register 16 (0x10): Port 1 Control 0

Register 32 (0x20): Port 2 Control 0

Register 48 (0x30): Port 3 Control 0

Bit Name

7 Broadcast

Storm

Protection

Enable

6

5

4-3

DiffServ

Priority

Classification

Enable

802.1p

Priority

Classification

Enable

Port-based

Priority

Classification

R/W = 1, enable broadcast storm protection for ingress packets on port

= 0, disable broadcast storm protection

R/W = 1, enable DiffServ priority classification for ingress packets (IPv4) on port

= 0, disable DiffServ function

R/W = 1, enable 802.1p priority classification for ingress packets on port

= 0, disable 802.1p

R/W = 00, ingress packets on port will be classified as priority 0 queue if “Diffserv” or “802.1p” classification is not enabled or fails to classify.

= 01, ingress packets on port will be classified as priority 1 queue if “Diffserv” or “802.1p” classification is not enabled or fails to classify.

= 10, ingress packets on port will be classified as priority 2 queue if “Diffserv” or “802.1p” classification is not enabled or fails to classify.

= 11, ingress packets on port will be classified as priority 3 queue if “Diffserv” or “802.1p” classification is not enabled or fails to classify.

Note: “DiffServ”, “802.1p” and port priority can be enabled at the same time. The OR’ed result of 802.1p and DSCP overwrites the port priority.

Default

0

0

0

00

0

1

0

Tag

Removal

TXQ Split

Enable tags to packets without 802.1p/q tags when received. The switch will not add tags to packets already tagged. The tag inserted is the ingress port’s “port VID”.

= 0, disable tag insertion

R/W = 1, when packets are output on the port, the switch will remove

802.1p/q tags from packets with 802.1p/q tags when received. The switch will not modify packets received without tags.

= 0, disable tag removal

R/W = 1, split TXQ to 4 queue configuration. It cannot be enable at the same time with split 2 queue at register 18, 34,50 bit 7.

= 0, no split, treated as 1 queue configuration

0

0

September 2011 56 M9999-092111-1.4

Micrel, Inc.

Register 17 (0x11): Port 1 Control 1

Register 33 (0x21): Port 2 Control 1

Register 49 (0x31): Port 3 Control 1

Bit Name

6

5

4

Receive

Sniff

= 1, Port is designated as sniffer port and will transmit packets that are monitored.

= 0, Port is a normal port

R/W = 1, All packets received on the port will be marked as “monitored packets” and forwarded to the designated “sniffer port”

= 0, no receive monitoring

Transmit

Sniff

R/W = 1, All packets transmitted on the port will be marked as “monitored packets” and forwarded to the designated “sniffer port”

= 0, no transmit monitoring

Double Tag R/W = 1, All packets will be tagged with port default tag of ingress port regardless of the original packets are tagged or not

= 0, do not double tagged on all packets

KSZ8863MLL/FLL/RLL

Default

0

0

0

0

0

2-0

Ceiling

Port VLAN membership field” in the port default tag register, replace the packet’s “user priority field” with the “user priority field” in the port default tag register.

= 0, do not compare and replace the packet’s ‘user priority field”

R/W Define the port’s egress port VLAN membership. The port can only communicate within the membership. Bit 2 stands for port 3, bit 1 stands for port 2, bit 0 stands for port 1.

An ‘1’ includes a port in the membership.

An ‘0’ excludes a port from membership.

Register 18 (0x12): Port 1 Control 2

Register 34 (0x22): Port 2 Control 2

Register 50 (0x32): Port 3 Control 2

Bit Name

7 Enable 2

Queue Split of Tx Queue

6

5

4

Ingress

VLAN

Filtering

Discard non

PVID

Packets

Force Flow

Control

It cannot be enable at the same time with split 4 queue at register 16,32 and 48 bit 0.

=0, Disable

R/W = 1, the switch will discard packets whose VID port membership in

VLAN table bits [18:16] does not include the ingress port.

= 0, no ingress VLAN filtering.

R/W = 1, the switch will discard packets whose VID does not match ingress port default VID.

= 0, no packets will be discarded

R/W = 1, will always enable full duplex flow control on the port, regardless of

AN result.

= 0, full duplex flow control is enabled based on AN result.

111

Default

0

0

0

Pin value during reset:

For port 1, SPIQ pin

(defult is PD)

For port 2, SMRXD30 pin

For port 3, this bit has no meaning. Flow

Control is set by Reg.

6, bit 5.

September 2011 57 M9999-092111-1.4

Micrel, Inc.

Bit Name

3

2

Back

Pressure

Enable

Transmit

Enable

R/W = 1, enable port’s half duplex back pressure

= 0, disable port’s half duplex back pressure

1 Receive

0

Enable

Learning

Disable

R/W = 1, enable packet transmission on the port

= 0, disable packet transmission on the port

R/W = 1, enable packet reception on the port

= 0, disable packet reception on the port

R/W = 1, disable switch address learning capability

= 0, enable switch address learning

Note:

Bits [2:0] are used for spanning tree support.

Register 19 (0x13): Port 1 Control 3

Register 35 (0x23): Port 2 Control 3

Register 51 (0x33): Port 3 Control 3

Bit Name

[15:8]

Tag R/W Port’s

7-5 : User priority bits

4 : CFI bit

3-0 : VID[11:8]

Register 20 (0x14): Port 1 Control 4

Register 36 (0x24): Port 2 Control 4

Register 52 (0x34): Port 3 Control 4

Bit Name

Tag R/W Port’s

[7:0]

Note: Registers 19 and 20 (and those corresponding to other ports) serve two purposes:

Associated with the ingress untagged packets, and used for egress tagging.

Default VID for the ingress untagged or null-VID-tagged packets, and used for address lookup.

Register 21 (0x15): Port 1 Control 5

Register 37 (0x25): Port 2 Control 5

Register 53 (0x35): Port 3 Control 5

Bit Name

7 Port 3 MII mode

Selection

6

5

Self-address filtering enable

MACA1

(not for

0x35)

Self-address filtering enable

September 2011

R/W 1: Port 3 MII MAC mode

0: Port 3 MII PHY mode

Note: Bit 7 is reserved for port 1 and port 2

R/W =1, enable port 1 self-address filtering MACA1

=0, disable

R/W =1, enable port 2 Self-address filtering MACA2

=0, disable

58

KSZ8863MLL/FLL/RLL

Default

0

1

1

0

Default

0x00

Default

0x01

Default

0

0

0

M9999-092111-1.4

Micrel, Inc.

Bit Name

MACA2

(not for

0x35)

4

3-2

Drop Ingress

Tagged

Frame

Limit Mode

=0, Disable

1

0

Count IFG

Count Pre

R/W Ingress Limit Mode

These bits determine what kinds of frames are limited and counted against ingress rate limiting.

= 00, limit and count all frames

= 01, limit and count Broadcast, Multicast, and flooded unicast frames

= 10, limit and count Broadcast and Multicast frames only

= 11, limit and count Broadcast frames only

R/W Count IFG bytes

= 1, each frame’s minimum inter frame gap

(IFG) bytes (12 per frame) are included in Ingress and Egress rate limiting calculations.

= 0, IFG bytes are not counted.

R/W Count Preamble bytes

= 1, each frame’s preamble bytes (8 per frame) are included in Ingress and Egress rate limiting calculations.

= 0, preamble bytes are not counted.

Register 22[6:0] (0x16): Port 1 Q0 ingress data rate limit

Register 38[6:0] (0x26): Port 2 Q0 ingress data rate limit

Register 54[6:0] (0x36): Port 3 Q0 ingress data rate limit

7

6-0

RMII

REFCLK

INVERT.

Q0 Ingress

Data Rate limit

R/W 1: Port 3 inverted refclk selected

0: Port 3 original refclk selected

Note: Bit 7 is reserved for port 1 and port 2

R/W Ingress data rate limit for priority 0 frames

Ingress traffic from this priority queue is shaped according to the ingress Data Rate Selected Table.

KSZ8863MLL/FLL/RLL

Default

0

00

0

0

Default

0

Note: Not Applied to

Reg.22 and 38(Port 1,

Port 2)

0

September 2011 59 M9999-092111-1.4

Micrel, Inc.

Register 23[6:0] (0x17): Port 1 Q1 ingress data rate limit

Register 39[6:0] (0x27): Port 2 Q1 ingress data rate limit

Register 55[6:0] (0x37): Port 3 Q1 ingress data rate limit

Bit Name

7 Reserved R/W

Do not change the default values.

6-0 Q1 Ingress data Rate limit

R/W Ingress data rate limit for priority 1 frames

Ingress traffic from this priority queue is shaped according to the ingress Data Rate Selected Table.

Register 24[6:0] (0x18): Port 1 Q2 ingress data rate limit

Register 40[6:0] (0x28): Port 2 Q2 ingress data rate limit

Register 56[6:0] (0x38): Port 3 Q2 ingress data rate limit

Bit Name

7 Reserved R/W

Do not change the default values.

6-0 Q2 Ingress

Data Rate limit

R/W Ingress data rate limit for priority 2 frames

Ingress traffic from this priority queue is shaped according to ingress

Data Rate Selection Table.

Register 25[6:0] (0x19): Port 1 Q3 ingress data rate limit

KSZ8863MLL/FLL/RLL

Default

0

0

Default

0

0

Register 41[6:0] (0x29): Port 2 Q3 ingress data rate limit

Register 57[6:0] (0x39): Port 3 Q3 ingress data rate limit

Bit Name

7 Reserved RO

Do not change the default values.

6-0 Q3 Ingress

Data Rate limit

R/W Ingress data rate limit for priority 3 frames

Ingress traffic from this priority queue is shaped according to ingress

Data Rate Selection Table.

Default

0

0

Note:

Most of the contents in registers 26-31 and registers 42-47 for ports 1 and 2, respectively, can also be accessed with the MIIM PHY registers.

September 2011 60 M9999-092111-1.4

Micrel, Inc.

Data Rate Limit for ingress or egress

64 Kbps

128 Kbps

192 Kbps

256 Kbps

320 Kbps

384 Kbps

448 Kbps

512 Kbps

576 Kbps

640 Kbps

704 Kbps

768 Kbps

832 Kbps

896 Kbps

960 Kbps

KSZ8863MLL/FLL/RLL

100BT

Register bit[6:0], Q=0..3

1 to 0x63 for the Rate

1Mbps to 99Mbps.

0 or 0x64 for the rate

100Mbps

0x65

0x66

0x67

0x68

0x69

0x6A

0x6B

0x6C

0x6D

0x6E

0x6F

0x70

0x71

0x72

0x73

Table 14. Data Rate Limit Table

10BT

Register bit[6:0], Q=0..3

1 to 0x09 for the rate

1Mbps to 9Mbps

0 or 0x0A for the rate

10Mbps

September 2011 61 M9999-092111-1.4

Micrel, Inc.

Register 26 (0x1A): Port 1 PHY Special Control/Status

Register 42 (0x2A): Port 2 PHY Special Control/Status

Register 58 (0x3A): Reserved, not applied to port 3

Bit Name

7

6-5

Vct 10M Short

Vct_result

RO

RO

=1, Less than 10 meter short

=00, Normal condition

=01, Open condition detected in cable

=10, Short condition detected in cable

=11, Cable diagnostic test has failed

4 Vct_en

3 Force_lnk

(SC) this bit will be self-cleared.

=0, Indicate cable diagnostic test (if enabled) has completed and the status information is valid for read.

R/W =1, Force link pass

=0, Normal Operation

2

1

Do not change the default value.

Remote Loopback R/W =1, Perform Remote loopback, as follows:

Port 1 (reg. 26, bit 1 = ‘1’)

Start: RXP1/RXM1 (port 1)

Loopback: PMD/PMA of port 1’s PHY

End: TXP1/TXM1 (port 1)

Port 2 (reg. 42, bit 1 = ‘1’)

Start: RXP2/RXM2 (port 2)

Loopback: PMD/PMA of port 2’s PHY

End: TXP2/TXM2 (port 2)

=0, Normal Operation

KSZ8863MLL/FLL/RLL

Default

0

00

0

0

0

0

0

Distance to the fault.

It’s approximately 0.4m*vct_fault_count[8:0]

Register 27 (0x1B): Port 1 Not support

Register 43 (0x2B): Port 2 LinkMD Result

Register 59 (0x3B): Reserved, not applied to port 3

Bit Name

7-0 Vct_fault_count[7:

0]

RO

Bits[7:0] of VCT fault count

Distance to the fault.

It’s approximately 0.4m*Vct_fault_count[8:0]

Default

0x00

September 2011 62 M9999-092111-1.4

Micrel, Inc.

Register 28 (0x1C): Port 1 Control 12

Register 44 (0x2C): Port 2 Control 12

Register 60 (0x3C): Reserved, not applied to port 3

Bit Name

7 Auto

Negotiation

Enable

R/W = 1, auto negotiation is on

= 0, disable auto negotiation; speed and duplex are determined by bits 6 and 5 of this register.

6 Force Speed R/W = 1, forced 100BT if AN is disabled (bit 7)

= 0, forced 10BT if AN is disabled (bit 7)

4

3

2

1

0

Advertise

100BT Full

Duplex

Capability

Advertise

100BT Half

Duplex

Capability

Advertise

10BT Full

Duplex

Capability

Advertise

10BT Half

Duplex

Capability

= 1, forced full duplex if (1) AN is disabled or (2) AN is enabled but failed.

= 0, forced half duplex if (1) AN is disabled or (2) AN is enabled but failed.

Note: This bit or strap pin should be set to ‘0’ for the correct duplex mode indication of LED and register status when the link-up is AN to force mode.

Advertise Flow

Control capability

R/W = 1, advertise flow control (pause) capability

= 0, suppress flow control (pause) capability from transmission to link partner

R/W = 1, advertise 100BT full duplex capability

= 0, suppress 100BT full duplex capability from transmission to link partner

R/W

R/W

R/W

= 1, advertise 100BT half duplex capability

= 0, suppress 100BT half duplex capability from transmission to link partner

= 1, advertise 10BT full duplex capability

= 0, suppress 10BT full duplex capability from transmission to link partner

= 1, advertise 10BT half duplex capability

= 0, suppress 10BT half duplex capability from transmission to link partner

Register 29 (0x1D): Port 1 Control 13

Register 45 (0x2D): Port 2 Control 13

Register 61 (0x3D): Reserved, not applied to port 3

Bit Name

6 Txdis

= 1, turn off all port’s LEDs (LEDx_1, LEDx_0, where “x” is the port number). These pins will be driven high if this bit is set to one.

= 0, normal operation

R/W = 1, disable the port’s transmitter

= 0, normal operation

KSZ8863MLL/FLL/RLL

Default

1

For port 1, P1LED0 pin value during reset.(default is PD)

For port 2, SMRXD33 pin value during reset

1

For port 1, P1LED1 pin value during reset.

For port 2, SMRXD32 pin value during reset.

1

For port 1, SMRXDV3 pin value during reset.

For port 2, SMRXD31 pin value during reset.

1

1

1

1

1

Default

0

0

September 2011 63 M9999-092111-1.4

Micrel, Inc.

Bit Name

5

4

3

2

1

0

Restart AN

Disable Far- end Fault

Power Down

Disable Auto

MDI/MDI-X

Force MDI

Loopback

R/W = 1, restart auto-negotiation

= 0, normal operation

R/W = 1, disable far-end fault detection and pattern transmission.

= 0, enable far-end fault detection and pattern transmission

R/W = 1, power down

= 0, normal operation

R/W = 1, disable auto MDI/MDI-X function

= 0, enable auto MDI/MDI-X function

R/W If auto MDI/MDI-X is disabled,

= 1, force PHY into MDI mode (transmit on RXP/RXM pins)

= 0, force PHY into MDI-X mode (transmit on TXP/TXM pins)

R/W = 1, perform loopback, as indicated:

Port 1 Loopback (reg. 29, bit 0 = ‘1’)

Start: RXP2/RXM2 (port 2)

Loopback: PMD/PMA of port 1’s PHY

End: TXP2/TXM2 (port 2)

Port 2 Loopback (reg. 45, bit 0 = ‘1’)

Start: RXP1/RXM1 (port 1)

Loopback: PMD/PMA of port 2’s PHY

End: TXP1/TXM1 (port 1)

= 0, normal operation

Register 30 (0x1E): Port 1 Status 0

Register 46 (0x2E): Port 2 Status 0

Register 62 (0x3E): Reserved, not applied to port 3

Bit Name

7 MDI-X Status

6

5

4

AN Done

Link Good

RO = 1, MDI

= 0, MDI-X

RO = 1, auto-negotiation completed

= 0, auto-negotiation not completed

RO = 1, link good

= 0, link not good

RO = 1, link partner flow control (pause) capable

= 0, link partner not flow control (pause) capable

3

2

1

0

Partner Flow

Control

Capability

Partner 100BT

Full Duplex

Capability

Partner 100BT

Half Duplex

Capability

Partner 10BT

Full Duplex

Capability

Partner 10BT

RO = 1, link partner 100BT full duplex capable

= 0, link partner not 100BT full duplex capable

RO = 1, link partner 100BT half duplex capable

= 0, link partner not 100BT half duplex capable

RO = 1, link partner 10BT full duplex capable

= 0, link partner not 10BT full duplex capable

RO = 1, link partner 10BT half duplex capable

September 2011 64

KSZ8863MLL/FLL/RLL

Default

0

0

0

0

0

0

Default

0

0

0

0

0

0

0

0

M9999-092111-1.4

Micrel, Inc.

Bit Name

Half Duplex

Capability

= 0, link partner not 10BT half duplex capable

Register 31 (0x1F): Port 1 Status 1

Register 47 (0x2F): Port 2 Status 1

Register 63 (0x3F): Port 3 Status 1

Bit Name

7 Hp_mdix R/W 1 = HP Auto MDI/MDI-X mode

0 = Micrel Auto MDI/MDI-X mode

KSZ8863MLL/FLL/RLL

Default

6 Reserved RO

5 Polrvs

Do not change the default value.

RO 1 = polarity is reversed

0 = polarity is not reversed

4

3

2

1

0

Transmit Flow

Control Enable

Receive Flow

Control Enable

Operation

Speed

Operation

Duplex

Far-end Fault

RO 1 = transmit flow control feature is active

0 = transmit flow control feature is inactive

RO 1 = receive flow control feature is active

0 = receive flow control feature is inactive

RO 1 = link speed is 100Mbps

0 = link speed is 10Mbps

RO 1 = link duplex is full

0 = link duplex is half

RO = 1, Far-end fault status detected

= 0, no Far-end fault status detected

Register 67 (0x43): Reset

Bit Name

4 Software

Reset

R/W =1, Software reset

=0, Clear

Note: Software reset will reset all registers to the initial values of the power-on reset or warm reset (keep the strap values). compelete reset

=0, Clear

Note: PCS reset will reset the state machine and clock domain in PHY’s PCS layer.

Default

1

Note:

Only ports 1 and 2 are PHY ports.

This bit is not applicable to port 3

(MII).

0

0

Note:

This bit is not applicable to port 3 (MII).

This bit is only valid for 10BT

0

0

0

0

0

This bit is applicable to port 1 only.

Default

0

0

September 2011 65 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

Advanced Control Registers (Registers 96-198)

The IPv4/IPv6 TOS Priority Control Registers implement a fully decoded, 128-bit DSCP (Differentiated Services Code

Point) register set that is used to determine priority from the ToS (Type of Service) field in the IP header. The most significant 6 bits of the TOS field are fully decoded into 64 possibilities, and the singular code that results is compared against the corresponding bits in the DSCP register to determine the priority.

Register 96 (0x60): TOS Priority Control Register 0

Bit Name

7-6 DSCP[7:6] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x03.

5-4 DSCP[5:4] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x02.

3-2 DSCP[3:2] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x01.

1-0 DSCP[1:0] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x00.

Register 97 (0x61): TOS Priority Control Register 1

Bit Name

Default

00

00

00

00

Default

00 bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x07.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x06.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x05.

1-0 DSCP[9:8] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x04.

Register 98 (0x62): TOS Priority Control Register 2

Bit Name

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x0B.

00

00

00

Default

00

00 bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x0A.

3-2 DSCP[19:18] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x09.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x08.

00

00

September 2011 66 M9999-092111-1.4

Micrel, Inc.

Register 99 (0x63): TOS Priority Control Register 3

Bit Name

7-6 DSCP[31:30] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x0F.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x0E. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x0D.

1-0 DSCP[25:24] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x0C.

Register 100 (0x64): TOS Priority Control Register 4

Bit Name

bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x13. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x12.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x11. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x10.

Register 101 (0x65): TOS Priority Control Register 5

Bit Name

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x17.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x16. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x15.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x14.

KSZ8863MLL/FLL/RLL

Default

00

00

00

00

Default

00

00

00

00

Default

00

00

00

00

September 2011 67 M9999-092111-1.4

Micrel, Inc.

Register 102 (0x66): TOS Priority Control Register 6

Bit Name

7-6 DSCP[55:54] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x1B.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x1A. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x19.

1-0 DSCP[49:48] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x18.

Register 103 (0x67): TOS Priority Control Register 7

Bit Name

bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x1F. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x1E.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x1D. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x1C.

Register 104 (0x68): TOS Priority Control Register 8

Bit Name

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x23.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x22. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x21.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x20.

KSZ8863MLL/FLL/RLL

Default

00

00

00

00

Default

00

00

00

00

Default

00

00

00

00

September 2011 68 M9999-092111-1.4

Micrel, Inc.

Register 105 (0x69): TOS Priority Control Register 9

Bit Name

7-6 DSCP[79:78] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x27.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x26. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x25.

1-0 DSCP[73:72] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x24.

Register 106 (0x6A): TOS Priority Control Register 10

Bit Name

bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x2B. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x2A.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x29. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x28.

Register 107 (0x6B): TOS Priority Control Register 11

Bit Name

7-6 DSCP[95:94] R/W The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x2F.

5-4 DSCP[93:92] R/W The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x2E.

3-2 DSCP[91:90] R/W The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x2D.

1-0 DSCP[89:88] R/W The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x2C.

KSZ8863MLL/FLL/RLL

Default

00

00

00

00

Default

00

00

00

00

Default

00

00

00

00

September 2011 69 M9999-092111-1.4

Micrel, Inc.

Register 108 (0x6C): TOS Priority Control Register 12

Bit Name

7-6 DSCP[103:102] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x33.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x32. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x31.

1-0 DSCP[97:96] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x30.

Register 109 (0x6D): TOS Priority Control Register 13

Bit Name

bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x37. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x36.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x35. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x34.

Register 110 (0x6E): TOS Priority Control Register 14

Bit Name

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x3B.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x3A. bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x39.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x38.

KSZ8863MLL/FLL/RLL

Default

00

00

00

00

Default

00

00

00

00

Default

00

00

00

00

September 2011 70 M9999-092111-1.4

Micrel, Inc.

Register 111 (0x6F): TOS Priority Control Register 15

Bit Name

7-6 DSCP[127:126] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x3F.

The value in this field is used as the frame’s priority when bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x3E.

KSZ8863MLL/FLL/RLL

Default

00

00

00 bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x3D.

1-0 DSCP[121:120] R/W bits [7:2] of the frame’s IP TOS/DiffServ/Traffic Class value is 0x3C.

00

Registers 112 to 117

Registers 112 to 117 contain the switch engine’s MAC address. This 48-bit address is used as the Source Address for the

MAC’s full duplex flow control (PAUSE) frame.

Register 112 (0x70): MAC Address Register 0

Bit Name

7-0 MACA[47:40] R/W

Register 113 (0x71): MAC Address Register 1

Bit Name

7-0 MACA[39:32] R/W

Register 114 (0x72): MAC Address Register 2

Bit Name

7-0 MACA[31:24] R/W

Register 115 (0x73): MAC Address Register 3

Bit Name

7-0 MACA[23:16] R/W

Register 116 (0x74): MAC Address Register 4

Bit Name

7-0 MACA[15:8] R/W

Register 117 (0x75): MAC Address Register 5

Bit Name

7-0 MACA[7:0] R/W

Default

0x00

Default

0x10

Default

0xA1

Default

0xFF

Default

0xFF

Default

0xFF

September 2011 71 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

Registers 118 to 120

Registers 118 to 120 are User Defined Registers (UDRs). These are general purpose read/write registers that can be used to pass user defined control and status information between the KSZ8863 and the external processor.

Register 118 (0x76): User Defined Register 1

Bit Name

7-0 UDR1 R/W

Register 119 (0x77): User Defined Register 2

Bit Name

7-0 UDR2 R/W

Default

0x00

Default

0x00

Register 120 (0x78): User Defined Register 3

Bit Name

7-0 UDR3 R/W

Default

0x00

Registers 121 to 131

Registers 121 to 131 provide read and write access to the static MAC address table, VLAN table, dynamic MAC address table, and MIB counters.

Register 121 (0x79): Indirect Access Control 0

Bit Name

7-5 Reserved

4

3-2

Read High /

Write Low

Table Select

Do not change the default values.

R/W = 1, read cycle

= 0, write cycle

R/W 00 = static MAC address table selected

01 = VLAN table selected

10 = dynamic MAC address table selected

11 = MIB counter selected

R/W Bits [9:8] of indirect address 1-0 Indirect

Address High

Register 122 (0x7A): Indirect Access Control 1

Bit Name

7-0 Indirect

Address Low

R/W Bits [7:0] of indirect address

Note:

A write to register 122 triggers the read/write command. Read or write access is determined by register 121 bit 4.

Register 123 (0x7B): Indirect Data Register 8

Bit Name

7

CPU Read

Status

6-3 Reserved

2-0 Indirect Data

[66:64]

RO

This bit is applicable only for dynamic MAC address table and MIB counter reads.

= 1, read is still in progress

= 0, read has completed

RO Reserved

RO Bits [66:64] of indirect data

Default

000

0

00

00

Default

0000_0000

Default

0

0000

000

September 2011 72 M9999-092111-1.4

Micrel, Inc.

Register 124 (0x7C): Indirect Data Register 7

Bit Name

7-0

Indirect Data

[63:56]

R/W Bits [63:56] of indirect data

Register 125 (0x7D): Indirect Data Register 6

Bit Name

7-0 Indirect Data

[55:48]

R/W Bits [55:48] of indirect data

Register 126 (0x7E): Indirect Data Register 5

Bit Name

7-0 Indirect Data

[47:40]

R/W Bits [47:40] of indirect data

Register 127 (0x7F): Indirect Data Register 4

Bit Name

7-0 Indirect Data

[39:32]

R/W Bits [39:32] of indirect data

Register 128 (0x80): Indirect Data Register 3

Bit Name

7-0 Indirect Data

[31:24]

R/W Bits [31:24] of indirect data

Register 129 (0x81): Indirect Data Register 2

Bit Name

7-0 Indirect Data

[23:16]

R/W Bits [23:16] of indirect data

Register 130 (0x82): Indirect Data Register 1

Bit Name

7-0 Indirect Data

[15:8]

R/W Bits [15:8] of indirect data

Register 131 (0x83): Indirect Data Register 0

Bit Name

7-0 Indirect Data

[7:0]

R/W Bits [7:0] of indirect data

Register 147~142(0x93~0x8E): Station Address 1 MACA1

Register 153~148 (0x99~0x94): Station Address 2 MACA2

Bit Name

47-0 Station address

R/W 48-bit Station address MACA1 and MACA2.

Note: The station address is used for self MAC address filtering, see the port register control 5 bits [6,5] for detail.

KSZ8863MLL/FLL/RLL

Default

0000_0000

Default

0000_0000

Default

0000_0000

Default

0000_0000

Default

0000_0000

Default

0000_0000

Default

0000_0000

Default

0000_0000

Default

48’h0

Note:

the MSB bits[47-40] of the MAC is the register 147 and 153. The LSB bits[7-0] of

MAC is the register 142 and 148.

September 2011 73 M9999-092111-1.4

Micrel, Inc.

Register 154[6:0] (0x9A): Port 1 Q0 Egress data rate limit

Register 158[6:0] (0x9E): Port 2 Q0 Egress data rate limit

Register 162[6:0] (0xA2): Port 3 Q0 Egress data rate limit

Bit Name

7

6-0

Egress Rate

Limit Flow

Control Enable

Q0 Egress

Data Rate limit

R/W 1: enable egress rate limit flow control.

0: disable

R/W Egress data rate limit for priority 0 frames

Egress traffic from this priority queue is shaped according to the Data Rate Limit Selected Table.

Register 155[6:0] (0x9B): Port 1 Q1 Egress data rate limit

Register 159[6:0] (0x9F): Port 2 Q1 Egress data rate limit

Register 163[6:0] (0xA3): Port 3 Q1 Egress data rate limit

Bit Name

7 Reserved R/W

Do not change the default values.

6-0 Q1 Egress data Rate limit

R/W Egress data rate limit for priority 1 frames

Egress traffic from this priority queue is shaped according to the Data Rate Limit Selected Table.

Register 156[6:0] (0x9C): Port 1 Q2 Egress data rate limit

Register 160[6:0] (0xA0): Port 2 Q2 Egress data rate limit

Register 164[6:0] (0xA4): Port 3 Q2 Egress data rate limit

Bit Name

7 Reserved R/W

Do not change the default values.

6-0 Q2 Egress

Data Rate limit

R/W Egress data rate limit for priority 2 frames

Egress traffic from this priority queue is shaped according to the Data Rate Limit Selected Table.

Register 157[6:0] (0x9D): Port 1 Q3 Egress data rate limit

Register 161[6:0] (0xA1): Port 2 Q3 Egress data rate limit

Register 165[6:0] (0xA5): Port 3 Q3 Egress data rate limit

Bit Name

7 Reserved R/W

Do not change the default values.

6-0 Q3 Egress

Data Rate limit

R/W Egress data rate limit for priority 3 frames

Egress traffic from this priority queue is shaped according to the Data Rate Limit Selected Table.

KSZ8863MLL/FLL/RLL

Default

0

0

Default

0

0

Default

0

0

Default

0

0

September 2011 74 M9999-092111-1.4

Micrel, Inc.

Register 166 (0xA6): KSZ8863 mode indicator

Bit Name

7-0

KSZ8863

Mode Indicator

RO bit7: 1: 2 MII mode bit6: 1: 48P pkg of 2 PHY mode bit5: 1: Port 1 RMII 0: Port 1 MII bit4: 1: Port 3 RMII 0: Port 3 MII bit3: 1: Port 1 MAC MII 0: Port 1 PHY MII bit2: 1: Port 3 MAC MII 0: Port 3 PHY MII bit1: 1: Port 1 Copper 0: Port 1 Fiber bit0: 1: Port 2 Copper 0: Port 2 Fiber

Register 167 (0xA7): High Priority Packet Buffer Reserved for Q3

Bit Name

7-0 Reserved RO Reserved

Do not change the default values.

Register 168 (0xA8): High Priority Packet Buffer Reserved for Q2

Bit Name

7-0 Reserved RO Reserved

Do not change the default values.

Register 169 (0xA9): High Priority Packet Buffer Reserved for Q1

Bit Name

7-0 Reserved RO Reserved

Do not change the default values.

Register 170 (0xAA): High Priority Packet Buffer Reserved for Q0

Bit Name

7-0 Reserved RO Reserved

Do not change the default values.

Register 171 (0xAB): PM Usage Flow Control Select Mode 1

Bit Name

7 Reserved RO

Do not change the default values.

6 Reserved RO

Do not change the default values.

5-0 Reserved RO Reserved

Do not change the default values.

Register 172 (0xAC): PM Usage Flow Control Select Mode 2

Bit Name

7-6 Reserved

5-0 Reserved

RO Reserved

Do not change the default values.

RO Reserved

Do not change the default values.

September 2011 75

KSZ8863MLL/FLL/RLL

Default

0x03 MLL

0x13 RLL

0x01 FLL

Default

0x45

Default

0x35

Default

0x25

Default

0x15

Default

0

1

0x18

Default

0

0x10

M9999-092111-1.4

Micrel, Inc.

Register 173 (0xAD): PM Usage Flow Control Select Mode 3

Bit Name

7-6 Reserved

5-0 Reserved

RO Reserved

Do not change the default values.

RO Reserved

Do not change the default values.

Register 174 (0xAE): PM Usage Flow Control Select Mode 4

Bit Name

7-4 Reserved

3-0 Reserved

RO Reserved

Do not change the default values.

RO Reserved

Do not change the default values.

Register 175 (0xAF): TXQ Split for Q3 in Port 1

Bit Name

6:0 Reserved and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 176/177/178 bits[7]=1.

RO Reserved

Do not change the default values.

Register 176 (0xB0): TXQ Split for Q2 in Port 1

Bit Name

6:0 Reserved and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 175/177/178 bits[7]=1.

RO Reserved

Do not change the default values.

Register 177 (0xB1): TXQ Split for Q1 in Port 1

Bit Name

6:0 Reserved and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 175/176/178 bits[7]=1.

RO Reserved

Do not change the default values.

Register 178 (0xB2): TXQ Split for Q0 in Port 1

Bit Name

0 = enable straight priority with Reg 175/176/177 bits[7]=0 and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 175/176/177 bits[7]=1.

6:0 Reserved RO Reserved

Do not change the default values.

September 2011 76

KSZ8863MLL/FLL/RLL

8

Default

1

4

Default

1

Default

00

0x08

Default

0

0x05

Default

1

2

Default

1

1

M9999-092111-1.4

Micrel, Inc.

Register 179 (0xB3): TXQ Split for Q3 in Port 2

Bit Name

0 = enable straight priority with Reg 180/181/182 bits[7]=0 and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 180/181/182 bits[7]=1.

6:0 Reserved RO Reserved

Do not change the default values.

Register 180 (0xB4): TXQ Split for Q2 in Port 2

Bit Name

0 = enable straight priority with Reg 179/181/182 bits[7]=0 and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 179/181/182 bits[7]=1.

6:0 Reserved RO Reserved

Do not change the default values.

Register 181 (0xB5): TXQ Split for Q1 in Port 2

Bit Name

0 = enable straight priority with Reg 179/180/182 bits[7]=0 and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 179/180/182 bits[7]=1.

6:0 Reserved RO Reserved

Do not change the default values.

Register 182 (0xB6): TXQ Split for Q0 in Port 2

Bit Name

0 = enable straight priority with Reg 179/180/181 bits[7]=0 and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 179/180/181 bits[7]=1.

6:0 Reserved RO Reserved

Do not change the default values.

Register 183 (0xB7): TXQ Split for Q3 Port 3

Bit Name

0 = enable straight priority with Reg 184/185/186 bits[7]=0 and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 184/185/186 bits[7]=1.

6:0 Reserved RO Reserved

Do not change the default values.

Register 184 (0xB8): TXQ Split for Q2 Port 3

Bit Name

0 = enable straight priority with Reg 183/185/186 bits[7]=0 and Reg 5 bit[3]=0 for higher priority first

6:0 Reserved

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 183/185/186 bits[7]=1.

RO Reserved

September 2011 77

KSZ8863MLL/FLL/RLL

Default

1

2

Default

1

1

Default

1

8

Default

1

4

Default

1

8

Default

1

4

M9999-092111-1.4

Micrel, Inc.

Do not change the default values.

Register 185 (0xB9): TXQ Split for Q1 in Port 3

Bit Name

Select R/W and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 183/184/186 bits[7]=1.

6:0 Reserved RO Reserved

Do not change the default values.

Register 186 (0xBA): TXQ Split for Q0 in Port 3

Bit Name

6:0 Reserved and Reg 5 bit[3]=0 for higher priority first

1= priority ratio is 8:4:2:1 for 4 queues and 2:1 for 2 queues with Reg 183/184/185 bits[7]=1.

RO Reserved

Do not change the default values.

Register 187 (0xBB): Interrupt enable register

Bit Name

7-0 Interrupt

Enable

Register

R/W Interrupt enable register corresponding to bits in Register

188

Note:

Set register 187 first and then set register 188 (W1C=

Write ‘1’ Clear) to wait the interrupt at pin 35 INTRN for the link to be changed.

Register 188 (0xBC): Link Change Interrupt

Bit Name

7 P1 or P2 Link

Change (LC)

Interrupt

R/W Set to 1 when P1 or P2 link changes in analog interface

(W1C).

6-3 Reserved

2

Do not change the default values.

R/W Set to 1 when P3 link changes in MII interface (W1C).

1

0

P3 Link

Change (LC)

Interrupt

P2 Link

Change (LC)

Interrupt

P1 MII Link

Change (LC)

Interrupt

R/W Set to 1 when P2 link changes in analog interface (W1C).

R/W Set to 1 when P1 link changes in analog interface or MII interface (W1C).

Register 189 (0xBD): Force Pause Off Iteration Limit Enable

Bit Name

7-0 Force Pause

Off Iteration

Limit Enable

R/W =1, Enable,It is 160ms before requesting to invalidate flow control.

=0, Disable

KSZ8863MLL/FLL/RLL

Default

1

2

Default

1

1

Default

0x00

Default

0

0

0

0

0

Default

0

September 2011 78 M9999-092111-1.4

Micrel, Inc.

Register 192 (0xC0): Fiber Signal Threshold

Bit Name R/W

7 Port 2 Fiber

Signal

Threshold

R/W =1, Threshold is 2.0V

=0, Threshold is 1.2V

6 Port 1 Fiber

Signal

Threshold

R/W =1, Threshold is 2.0V

=0, Threshold is 1.2V

Do not change the default value.

Register 193 (0xC1): Internal 1.8V LDO Control

Bit Name R/W

6 Internal 1.8V

LDO Disable

Reserved

Do not change the default value.

R/W

=1, Disable internal 1.8V LDO

=0, Enable internal 1.8V LDO

5-0

Do not change the default value.

KSZ8863MLL/FLL/RLL

Default

0

0

0

Default

0

0

0

September 2011 79 M9999-092111-1.4

Micrel, Inc.

Register 194 (0xC2): Insert SRC PVID

Bit Name

7-6

5

4

3

2

1

0

Insert SRC port 1 PVID at

Port 2

Insert SRC port 1 PVID at

Port 3

Insert SRC port 2 PVID at

Port 1

Insert SRC port 2 PVID at

Port 3

Insert SRC port 3 PVID at

Port 1

Insert SRC port 3 PVID at

Port 2

R/W

R/W

R/W

R/W

R/W

R/W

Do not change the default value.

1= insert SRC port 1 PVID for untagged frame at egress port 2

1= insert SRC port 1 PVID for untagged frame at egress port 3

1= insert SRC port 2 PVID for untagged frame at egress port 1

1= insert SRC port 2 PVID for untagged frame at egress port 3

1= insert SRC port 3 PVID for untagged frame at egress port 1

1= insert SRC port 3 PVID for untagged frame at egress port 2

Register 195 (0xC3): Power Management and LED Mode

Bit Name

7

6

5-4

3

2

CPU interface

Power Down

Switch Power

Down

R/W CPU interface clock tree power down enable.

1: Enable

0: Disable

Note: Power save a little bit when MII interface is used and the traffic is stopped in the power management with normal mode

R/W Switch clock tree power down enable.

1: Enable

0:Disable

LED Mode

Selection

Note: Power save a little bit when MII interface is used and the traffic is stopped in the power management with normal mode

R/W 00: LED0 -> Link/ACT, LED1-> Speed

01: LED0 -> Link, LED1 -> ACT

10: LED0 -> Link/ACT, LED1 -> Duplex

LED output mode

11: LED0 -> Link, LED1 -> Duplex

R/W =1, the internal stretched energy signal from the analog module will be negated and output to LED1 and the internal device ready signal will be negated and output to LED0.

=0, the LED1/LED0 pins will indicate the regular LED outputs.

(Note. This is for debugging purpose.)

PLL Off Enable R/W =1, PLL power down enable

=0, disable

Note: This bit is used in Energy Detect mode with pin 27

MII_LINK_3 pull-up in the by-pass mode for saving power

September 2011 80

00

0

0

0

0

0

0

KSZ8863MLL/FLL/RLL

Default

Default

0

0

00

0

0

M9999-092111-1.4

Micrel, Inc.

Bit Name

1-0 Power

Management

Mode

R/W Power management mode

00: Normal Mode

01: Energy Detection Mode

10: Software Power Down Mode

11: Power Saving Mode

Register 196(0xC4): Sleep Mode

Bit Name

This value is used to control the minimum period the no energy event has to be detected consecutively before the device enters the low power state when the ED mode is on.

The unit is 20 ms. The default go_sleep time is 1.6 seconds.

Register 198 (0xC6): Forward Invalid VID Frame and Host Mode

Bit Name

7 Reserved RO

6-4 Forward Invid

VID Frame

Do not change the default value.

R/W Forwarding ports for frame with invalid VID

3 P3 RMII Clock

Selection

0: External

2 P1 RMII Clock

Selection

0: External

1-0 Host Interface

Mode

R/W 00: I2C master mode

01: I2C slave mode

10: SPI slave mode

11: SMI mode

KSZ8863MLL/FLL/RLL

Default

00

Default

0x50

Default

0

3b’0

0

0

Strapped value of P2LED1,

P2LED0.

September 2011 81 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

Static MAC Address Table

The KSZ8863 supports both a static and a dynamic MAC address table. In response to a Destination Address (DA) look up, the KSZ8863 searches both tables to make a packet forwarding decision. In response to a Source Address (SA) look up, only the dynamic table is searched for aging, migration and learning purposes.

The static DA look up result takes precedence over the dynamic DA look up result. If there is a DA match in both tables, the result from the static table is used. The entries in the static table will not be aged out by the KSZ8863.

The static table is accessed by a external processor via the SMI, SPI or I2C interfaces. The external processor performs all addition, modification and deletion of static MAC table entries.

57-54

53

FID

Use FID

R/W Filter VLAN ID – identifies one of the 16 active VLANs

R/W = 1, use (FID+MAC) for static table look ups

= 0, use MAC only for static table look ups

Default

0000

0

0

“receive enable=0” setting

= 0, no override

51 Valid R/W = 1, this entry is valid, the lookup result will be used

= 0, this entry is not valid

50-48 Forwarding

Ports

R/W These 3 bits control the forwarding port(s):

001, forward to port 1

010, forward to port 2

100, forward to port 3

011, forward to port 1 and port 2

110, forward to port 2 and port 3

101, forward to port 1 and port 3

111, broadcasting (excluding the port)

47-0 MAC Address R/W 48-bit MAC Address

0

000

0x0000_0000_000

0

Table 15. Format of Static MAC Table (8 Entries)

Examples:

1. Static Address Table Read (Read the 2 nd

Entry)

Write to reg. 121 (0x79) with 0x10

Write to reg. 122 (0x7A) with 0x01

Then,

Read reg. 124 (0x7C), static table bits [57:56]

Read reg. 125 (0x7D), static table bits [55:48]

Read reg. 126 (0x7E), static table bits [47:40]

Read reg. 127 (0x7F), static table bits [39:32]

Read reg. 128 (0x80), static table bits [31:24]

Read reg. 129 (0x81), static table bits [23:16]

Read reg. 130 (0x82), static table bits [15:8]

Read reg. 131 (0x83), static table bits [7:0]

// Read static table selected

// Trigger the read operation

September 2011 82 M9999-092111-1.4

Micrel, Inc.

2. Static Address Table Write (Write the 8 th

Entry)

Write to reg. 124 (0x7C), static table bits [57:56]

Write to reg. 125 (0x7D), static table bits [55:48]

Write to reg. 126 (0x7E), static table bits [47:40]

Write to reg. 127 (0x7F), static table bits [39:32]

Write to reg. 128 (0x80), static table bits [31:24]

Write to reg. 129 (0x81), static table bits [23:16]

Write to reg. 130 (0x82), static table bits [15:8]

Write to reg. 131 (0x83), static table bits [7:0]

Write to reg. 121 (0x79) with 0x00

Write to reg. 122 (0x7A) with 0x07

// Write static table selected

// Trigger the write operation

KSZ8863MLL/FLL/RLL

September 2011 83 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

VLAN Table

The KSZ8863 uses the VLAN table to perform look ups. If 802.1Q VLAN mode is enabled (register 5, bit 7 = 1), this table will be used to retrieve the VLAN information that is associated with the ingress packet. This information includes FID

(filter ID), VID (VLAN ID), and VLAN membership as described in the following table.

Bit Name R/W

19 Valid R/W = 1, entry is valid

= 0, entry is invalid

Default

1

111 a DA lookup fails (no match in both static and dynamic tables), the packet associated with this

VLAN will be forwarded to ports specified in this field. For example, 101 means port 3 and 1 are in this VLAN.

15-12 FID 0x0

11-0 VID represented by these four bit fields. FID is the mapped ID. If 802.1Q VLAN is enabled, the look up will be based on FID+DA and FID+SA.

R/W IEEE 802.1Q 12 bits VLAN ID 0x001

Table 16. Format of Static VLAN Table (16 Entries)

If 802.1Q VLAN mode is enabled, KSZ8863 will assign a VID to every ingress packet. If the packet is untagged or tagged with a null VID, the packet is assigned with the default port VID of the ingress port. If the packet is tagged with non null

VID, the VID in the tag will be used. The look up process will start from the VLAN table look up. If the VID is not valid, the packet will be dropped and no address learning will take place. If the VID is valid, the FID is retrieved. The FID+DA and

FID+SA lookups are performed. The FID+DA look up determines the forwarding ports. If FID+DA fails, the packet will be broadcast to all the members (excluding the ingress port) of the VLAN. If FID+SA fails, the FID+SA will be learned.

Examples:

1. VLAN Table Read (read the 3 rd

entry)

Write to reg. 121 (0x79) with 0x14

Write to reg. 122 (0x7A) with 0x02

Then,

Read reg. 129 (0x81), VLAN table bits [19:16]

Read reg. 130 (0x82), VLAN table bits [15:8]

// Read VLAN table selected

// Trigger the read operation

Read reg. 131 (0x83), VLAN table bits [7:0]

2. VLAN Table Write (write the 7 th

entry)

Write to reg. 129 (0x81), VLAN table bits [19:16]

Write to reg. 130 (0x82), VLAN table bits [15:8]

Write to reg. 131 (0x83), VLAN table bits [7:0]

Write to reg. 121 (0x79) with 0x04

Write to reg. 122 (0x7A) with 0x06

// Write VLAN table selected

// Trigger the write operation

September 2011 84 M9999-092111-1.4

Micrel, Inc.

Dynamic MAC Address Table

The KSZ8863 maintains the dynamic MAC address table. Read access is allowed only.

Bit Name

71 Data Not

Ready

70-67

66

65-56

55-54

53-52

Reserved

MAC Empty

No of Valid

Entries

Time Stamp

Source Port

RO = 1, entry is not ready, continue retrying until this bit is set to 0

= 0, entry is ready

RO Reserved

RO = 1, there is no valid entry in the table

= 0, there are valid entries in the table

RO Indicates how many valid entries in the table

0x3ff means 1K entries

0x001 means 2 entries

0x000 and bit 66 = 0 means 1 entry

0x000 and bit 66 = 1 means 0 entry

RO 2 bits counter for internal aging

RO The source port where FID+MAC is learned

00 : port 1

01 : port 2

10 : port 3

51-48 FID

47-0 MAC Address RO 48-bit MAC Address

Table 17. Format of Dynamic MAC Address Table (1K Entries)

KSZ8863MLL/FLL/RLL

Default

1

00_0000_0000

0x0

0x0000_0000_0000

Example:

Dynamic MAC Address Table Read (read the 1 st

entry and retrieve the MAC table size)

Write to reg. 121 (0x79) with 0x18

Write to reg. 122 (0x7A) with 0x00

// Read dynamic table selected

// Trigger the read operation

Then,

Read reg. 123 (0x7B), bit [7] dynamic table bits [66:64]

// if bit 7 = 1, restart (reread) from this register

Read reg. 124 (0x7C), dynamic table bits [63:56]

Read reg. 125 (0x7D), dynamic table bits [55:48]

Read reg. 126 (0x7E), dynamic table bits [47:40]

Read reg. 127 (0x7F), dynamic table bits [39:32]

Read reg. 128 (0x80), dynamic table bits [31:24]

Read reg. 129 (0x81), dynamic table bits [23:16]

Read reg. 130 (0x82), dynamic table bits [15:8]

Read reg. 131 (0x83), dynamic table bits [7:0]

00

September 2011 85 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

MIB (Management Information Base) Counters

The KSZ8863 provides 34 MIB counters per port. These counters are used to monitor the port activity for network management. The MIB counters have two format groups: “Per Port” and “All Port Dropped Packet.”

Bit Name

31 Overflow

Default

0

30

29-0

Count valid

Counter values

RO = 1, counter overflow

= 0, no counter overflow

RO = 1, counter value is valid

= 0, counter value is not valid

RO Counter value

0

0

Table 18. Format of “Per Port” MIB Counters

“Per Port” MIB counters are read using indirect memory access. The base address offsets and address ranges for all three ports are:

Port 1, base is 0x00 and range is (0x00-0x1f)

Port 2, base is 0x20 and range is (0x20-0x3f)

Port 3, base is 0x40 and range is (0x40-0x5f)

Port 1 MIB counters are read using the indirect memory offsets in the following table.

0x0

0x1

0x2

0x3

RxLoPriorityByte

RxHiPriorityByte

RxUndersizePkt

RxFragments

0x4 RxOversize

0x5 RxJabbers

Description

Rx lo-priority (default) octet count including bad packets

Rx hi-priority octet count including bad packets

Rx undersize packets w/ good CRC

Rx fragment packets w/ bad CRC, symbol errors or alignment errors

0x6 RxSymbolError

0x7 RxCRCError

Rx oversize packets w/ good CRC (max: 1536 or 1522 bytes)

Rx packets longer than 1522 bytes w/ either CRC errors, alignment errors, or symbol errors

(depends on max packet size setting)

Rx packets w/ invalid data symbol and legal packet size.

Rx packets within (64,1522) bytes w/ an integral number of bytes and a bad CRC (upper limit depends on max packet size setting)

0x8 RxAlignmentError Rx packets within (64,1522) bytes w/ a non-integral number of bytes and a bad CRC (upper limit depends on max packet size setting)

0x9 RxControl8808Pkts

0xA RxPausePkts

Number of MAC control frames received by a port with 88-08h in EtherType field

Number of PAUSE frames received by a port. PAUSE frame is qualified with EtherType (88-

08h), DA, control opcode (00-01), data length (64B min), and a valid CRC

0xB RxBroadcast

0xC RxMulticast

0xD

0xE

0xF

RxUnicast

Rx64Octets

Rx65to127Octets

Rx good broadcast packets (not including error broadcast packets or valid multicast packets)

Rx good multicast packets (not including MAC control frames, error multicast packets or valid broadcast packets)

Rx good unicast packets

Total Rx packets (bad packets included) that were 64 octets in length

Total Rx packets (bad packets included) that are between 65 and 127 octets in length

0x10 Rx128to255Octets

0x11 Rx256to511Octets

Total Rx packets (bad packets included) that are between 128 and 255 octets in length

Total Rx packets (bad packets included) that are between 256 and 511 octets in length

0x12 Rx512to1023Octets Total Rx packets (bad packets included) that are between 512 and 1023 octets in length

0x13 Rx1024to1522Octets Total Rx packets (bad packets included) that are between 1024 and 1522 octets in length (upper limit depends on max packet size setting)

0x14 TxLoPriorityByte Tx lo-priority good octet count, including PAUSE packets

0x15 TxHiPriorityByte Tx hi-priority good octet count, including PAUSE packets

September 2011 86 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

0x16 TxLateCollision

0x17

0x18

0x19

0x1A

TxPausePkts

TxBroadcastPkts

TxMulticastPkts

TxUnicastPkts

Description

The number of times a collision is detected later than 512 bit-times into the Tx of a packet

Number of PAUSE frames transmitted by a port

Tx good broadcast packets (not including error broadcast or valid multicast packets)

Tx good multicast packets (not including error multicast packets or valid broadcast packets)

Tx good unicast packets

0x1B TxDeferred

0x1C TxTotalCollision

Tx packets by a port for which the 1st Tx attempt is delayed due to the busy medium

Tx total collision, half duplex only

0x1D TxExcessiveCollision A count of frames for which Tx fails due to excessive collisions

0x1E TxSingleCollision

0x1F TxMultipleCollision

Successfully Tx frames on a port for which Tx is inhibited by exactly one collision

Successfully Tx frames on a port for which Tx is inhibited by more than one collision

Table 19. Port 1’s “Per Port” MIB Counters Indirect Memory Offsets

Bit Name

30-16 Reserved N/A

15-0 Counter Value RO Counter Value

Table 20. Format of “All Port Dropped Packet” MIB Counters

Default

N/A

0

September 2011 87 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

“All Port Dropped Packet” MIB counters are read using indirect memory access. The address offsets for these counters are shown in the following table:

0x100

0x101

0x102

0x103

0x104

0x105

Port1 TX Drop Packets

Port2 TX Drop Packets

Port3 TX Drop Packets

Port1 RX Drop Packets

Port2 RX Drop Packets

Port3 RX Drop Packets

TX packets dropped due to lack of resources

TX packets dropped due to lack of resources

TX packets dropped due to lack of resources

RX packets dropped due to lack of resources

RX packets dropped due to lack of resources

RX packets dropped due to lack of resources

Table 21. “All Port Dropped Packet” MIB Counters Indirect Memory Offsets

Examples:

1. MIB Counter Read (Read port 1 “Rx64Octets” Counter)

Write to reg. 121 (0x79) with 0x1c

Write to reg. 122 (0x7A) with 0x0e

Then

// Read MIB counters selected

// Trigger the read operation

Read reg. 128 (0x80), overflow bit [31] // If bit 31 = 1, there was a counter overflow valid bit [30] // If bit 30 = 0, restart (reread) from this register counter bits [29:24]

Read reg. 129 (0x81), counter bits [23:16]

Read reg. 130 (0x82), counter bits [15:8]

Read reg. 131 (0x83), counter bits [7:0]

2. MIB Counter Read (Read port 2 “Rx64Octets” Counter)

Write to reg. 121 (0x79) with 0x1c // Read MIB counter selected

Write to reg. 122 (0x7A) with 0x2e

Then,

// Trigger the read operation

Read reg. 128 (0x80), overflow bit [31] // If bit 31 = 1, there was a counter overflow valid bit [30] // If bit 30 = 0, restart (reread) from this register counter bits [29:24]

Read reg. 129 (0x81), counter bits [23:16]

Read reg. 130 (0x82), counter bits [15:8]

Read reg. 131 (0x83), counter bits [7:0]

3. MIB Counter Read (Read “Port1 TX Drop Packets” Counter)

Write to reg. 121 (0x79) with 0x1d // Read MIB counter selected

Write to reg. 122 (0x7A) with 0x00

Then

// Trigger the read operation

Read reg. 130 (0x82), counter bits [15:8]

Read reg. 131 (0x83), counter bits [7:0]

Additional MIB Counter Information

“Per Port” MIB counters are designed as “read clear.” These counters will be cleared after they are read.

“All Port Dropped Packet” MIB counters are not cleared after they are accessed and do not indicate overflow or validity; therefore, the application must keep track of overflow and valid conditions.

To read out all the counters, the best performance over the SPI bus is (160+3)*8*200 = 260ms, where there are 160 registers, 3 overheads, 8 clocks per access, at 5MHz. In the heaviest condition, the counters will overflow in 2 minutes. It is recommended that the software read all the counters at least every 30 seconds.

A high performance SPI master is also recommended to prevent counters overflow.

September 2011 88 M9999-092111-1.4

Micrel, Inc.

Absolute Maximum Ratings

(1)

Supply Voltage

VDDC) ................................. –0.5V to 2.4V

(VDDA_3.3V, VDDIO).............................. –0.5V to 4.0V

Input Voltage ................................................. –0.5V to 4.0V

Output Voltage .............................................. –0.5V to 4.0V

Lead Temperature (soldering, 10sec.)....................... 260°C

Storage Temperature (T s

) ..........................–55°C to 150°C

HBM ESD Rating .......................................................... 4KV

Electrical Characteristics

(4)

Operating Ratings

(2)

KSZ8863MLL/FLL/RLL

Supply Voltage

VDDC)............................1.690V to 1.890V

(VDDA_3.3) ............................................2.5V to 3.465V

(VDDIO) ................................................1.71V to 3.465V

Ambient Temperature (T

A

)

Commercial....................................................... 0°C to 70°C

Industrial................................................. –40°C to 85°C

Junction Temperature (T

J

) ......................................... 125°C

Junction Thermal Resistance

(3)

(

θ

JA

JC

) .................................................... 69.64°C/W

) ......................................................... 15°C/W

Current consumption is for the single 3.3V supply device only, and includes the 1.8V supply voltages (VDDA, VDDC) that are provided via power output pin 42(VDDCO).

Each PHY port’s transformer consumes an additional 45mA @ 3.3V for 100BASE-TX and 70mA @ 3.3V for 10BASE-T at fully traffic.

Symbol Parameter Condition Min Typ Max Units

I

100BASE-TX Operation (All Ports @ 100% Utilization)

ddxio

100BASE-TX

(analog core + digital core + transceiver + digital I/O)

V

DDA

_3.3, V

DDIO

= 3.3V

Core power is provided from the internal 1.8V

LDO with input voltage VDDIO

10BASE-T Operation (All Ports @ 100% Utilization)

I ddxio

10BASE-T

(analog core + digital core + transceiver + digital I/O)

V

DDA

_3.3, V

DDIO

= 3.3V

Core power is provided from the internal 1.8V

LDO with input voltage VDDIO

Power Management Mode

I dd3

Mode

I dd4

I dd5

Soft Power Down Mode

Energy Detect Mode

V

DDA

_3.3, V

DDIO

= 3.3V

Unplug Port 1 and Port 2

Set Register 195 bit[1,0] = [1,1]

V

DDA

_3.3, V

DDIO

= 3.3V

Set Register 195 bit[1,0] = [1,0]

V

DDA

_3.3, V

DDIO

= 3.3V

Unplug Port 1 and Port 2

Set Register 195 bit[7,0] = 0x05 with port 3

PHY mode and by-pass mode.

TTL Inputs (VDD_IO = 3.3V/2.5V/1.8V)

V

IH

Input High Voltage

V

IL

Input Low Voltage

114 mA

85 mA

96 mA

8 mA

16 mA

2.0/2.

0/1.3

-10

V

0.8/0.

6/0.3

10

V

µA I

IN

Input

TTL Outputs (VDD_IO = 3.3V/2.5V/1.8V)

V

OH

Output High Voltage

V

IN

= GND ~ VDD_IO

I

OH

= -8mA

V

OL

Output Low Voltage

I

OL

= 8mA

2.4/1.

9/1.5

V

0.4/0.

4/0.2

V

10 µA |I

OZ

| Output Tri-State Leakage

100BASE-TX Transmit (measured differentially after 1:1 transformer)

V

O

V

IMB

Peak Differential Output Voltage

Output Voltage Imbalance

100Ω termination across differential output

100Ω termination across differential output

0.95 1.05

2

V

%

September 2011 89 M9999-092111-1.4

Micrel, Inc.

Electrical Characteristics

(4)

(Continued)

Symbol Parameter

T r

/T f

Rise/Fall Time Imbalance

Duty Cycle Distortion

Overshoot

Condition

Peak-to-peak

10BASE-T Receive

V

SQ

Squelch Threshold 5MHz square wave

10BASE-T Transmit (measured differentially after 1:1 transformer)

V

P

Peak Differential Output Voltage 100Ω termination across differential output

Peak-to-peak

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. No (HS) heat spreader in this package.

4. T

A

= 25°C. Specification for packaged product only.

KSZ8863MLL/FLL/RLL

Min Typ Max Units

3 5 ns

0 0.5

±0.5 ns ns

400

2.4 mV

V

September 2011 90 M9999-092111-1.4

Micrel, Inc.

Timing Specifications

EEPROM Timing

KSZ8863MLL/FLL/RLL

Figure 16. EEPROM Interface Input Timing Diagram

Figure 17. EEPROM Interface Output Timing Diagram

t cyc1 t s1

Setup t h1

Hold t ov1

Output

Table 22. EEPROM Timing Parameters

September 2011 91 M9999-092111-1.4

Micrel, Inc.

MII Timing

KSZ8863MLL/FLL/RLL

Figure 18. MAC Mode MII Timing – Data Received from MII

t

CYC3 t

S3 t

H3 t

OV3

September 2011

Figure 19. MAC Mode MII Timing – Data Transmitted to MII

10Base-T/100Base-TX

Clock Cycle

Set-Up Time

Hold Time

Output Valid

Table 23. MAC Mode MII Timing Parameters

2

7

4

400/40

11 16 ns ns ns ns

92 M9999-092111-1.4

Micrel, Inc.

MII Timing (Continued)

KSZ8863MLL/FLL/RLL

Figure 20. PHY Mode MII Timing – Data Received from MII

t

CYC4 t

S4 t

H4 t

OV4

Figure 21. PHY Mode MII Timing – Data Transmitted to MII

10BaseT/100BaseT

Clock Cycle

Set-Up Time

Hold Time

Output Valid

Table 24. PHY Mode MII Timing Parameters

10

0

18

400/40

19 ns ns ns ns

September 2011 93 M9999-092111-1.4

Micrel, Inc.

RMII Timing

KSZ8863MLL/FLL/RLL

Figure 22. RMII Timing – Data Received from RMII

September 2011

Figure 23. RMII Timing – Data Transmitted to RMII

Table 25. RMII Timing Parameters

94 M9999-092111-1.4

Micrel, Inc.

I

2

C Slave Mode Timing

KSZ8863MLL/FLL/RLL

September 2011

Figure 24. I2C Input Timing

Figure 25. I2C Start Bit Timing

Figure 26. I2C Stop Bit Timing

Figure 27. I2C Output Timing

95 M9999-092111-1.4

Micrel, Inc.

I

2

C Slave Mode Timing (Continued)

KSZ8863MLL/FLL/RLL t

CYC

Clock t

S t

H t

TBS t

TBH

Start bit setup time

Start bit hold time

33

33 t

SBS t

SBH t

OV

Stop bit setup time

Stop bit hold time

2

33

Table 26. I2C Timing Parameters

Note:

Data is only allowed to change during SCL low time except start and stop bits. ns ns ns ns

September 2011 96 M9999-092111-1.4

Micrel, Inc.

SPI Timing

KSZ8863MLL/FLL/RLL

Figure 28. SPI Input Timing

t t

Symbols Parameters Units

f

C t

CHSL t

SLCH t

CHSH

SPISN inactive hold time

SPISN active setup time

90

90 ns ns

SHCH t

SHSL t

DVCH t

CHDX

SPISN active old time

SPISN inactive setup time

SPISN deselect time

Data input setup time

Data input hold time

90

90

100

20

30 ns ns ns ns ns

CLCH t

CHCL t

DLDH t

DHDL

Clock rise time

Clock fall time

Data input rise time

Data input fall time

1

1

1

1 us us us us

Table 27. SPI Input Timing Parameters

September 2011 97 M9999-092111-1.4

Micrel, Inc.

SPI Timing (Continued)

KSZ8863MLL/FLL/RLL

Figure 29. SPI Output Timing

Symbols Parameters Units

t f

C

Clock

CLQX t

CLQV t

CH t

CL t

QLQH t

QHQL t

SHQZ

SPIQ hold time

Clock low to SPIQ valid

Clock high time

Clock low time

SPIQ rise time

SPIQ fall time

SPIQ disable time

0

90

90

0

60

50

50

100 ns ns ns ns ns ns

Table 28. SPI Output Timing Parameters

September 2011 98 M9999-092111-1.4

Micrel, Inc.

Auto-Negotiation Timing

KSZ8863MLL/FLL/RLL tBTB tPW tCTD tCTC

September 2011

Figure 30. Auto-Negotiation Timing

FLP burst to FLP burst 8 16 24 ms width ms

Clock/Data pulse width 100 ns

Clock pulse to Data pulse

Clock pulse to Clock pulse

Number of Clock/Data pulse per burst

55.5

111

64

128

69.5

139

µs

µs

17 33

Table 29. Auto-Negotiation Timing Parameters

99 M9999-092111-1.4

Micrel, Inc.

MDC/MDIO Timing

KSZ8863MLL/FLL/RLL

Figure 31. MDC/MDIO Timing

Timing Parameter Description Min Typ Max Unit

t

P

MDC t

1MD1 t

MD2 t

MD3

MDIO (PHY input) setup to rising edge of MDC

MDIO (PHY input) hold from rising edge of MDC

MDIO (PHY output) delay from rising edge of MDC

10

4

222 ns ns ns

Table 30. MDC/MDIO Timing Parameters

September 2011 100 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

Reset Timing

The KSZ8863MLL/FLL/RLL reset timing requirement is summarized in the following figure and table.

Figure 32. Reset Timing

t t

Symbols Parameters Units

sr

Stable supply voltages to reset High 10 ms cs t ch t rc tvr

Configuration setup time

Configuration hold time

Reset to strap-in pin output

3.3V rise time

50

50

50 ns ns us

100 us

Table 31. Reset Timing Parameters

After the de-assertion of reset, it is recommended to wait a minimum of 100 us before starting programming on the managed interface (I2C slave, SPI slave, SMI, MIIM).

September 2011 101 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

Reset Circuit

The reset circuit in Figure 33 is recommended for powering up the KSZ8863MLL/FLL/RLL if reset is triggered only by the

power supply.

Figure 33. Recommended Reset Circuit

The reset circuit in Figure 34 is recommended for applications where reset is driven by another device (e.g., CPU, FPGA,

etc),. At power-on-reset, R, C and D1 provide the necessary ramp rise time to reset the KSZ8863MLL/FLL/RLL device.

The RST_OUT_n from CPU/FPGA provides the warm reset after power up.

September 2011

Figure 34. Recommended Reset Circuit for interfacing with CPU/FPGA Reset Output

102 M9999-092111-1.4

Micrel, Inc. KSZ8863MLL/FLL/RLL

Selection of Isolation Transformers

An 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode choke is recommended for exceeding FCC requirements.

The following table gives recommended transformer characteristics.

Turns ratio

Open-circuit inductance (min.)

Leakage inductance (max.)

Inter-winding capacitance (max.)

D.C. resistance (max.)

Insertion loss (max.)

HIPOT (min.)

1 CT : 1 CT

350

μH

0.4

μH

12pF

0.9

Ω

1.0dB

1500Vrms

Table 32. Transformer Selection Criteria

100mV, 100kHz, 8mA

1MHz (min.)

0MHz – 65MHz

Magnetic Manufacturer

Bel Fuse

Bel Fuse (MagJack)

Bel Fuse (MagJack)

Part Number

S558-5999-U7

SI-46001

SI-50170

Auto MDI-X

Yes

Yes

Yes

Number of Port

1

1

1

Pulse (low cost) H1260 Yes 1

1 TDK (Mag Jack) TLA-6T718

Table 33. Qualified Single Port Magnetics

Selection of Reference Crystal

Frequency tolerance (max)

Load capacitance (max)

Series resistance

Yes

±50

20

40

Table 34. Typical Reference Crystal Characteristics

ppm pF

Ω

September 2011 103 M9999-092111-1.4

Micrel, Inc.

Package Information

KSZ8863MLL/FLL/RLL

Figure 35. 48-Pin LQFP (LQ)

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com

Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A

Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale.

© 2011 Micrel, Incorporated.

September 2011 104 M9999-092111-1.4

Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement

Table of contents