PRE-SFP-T Datasheet - Precision Optical Transceivers

PRE-SFP-T Datasheet - Precision Optical Transceivers
PRE-SFP-T
1000Base-T Copper SFP Transceiver, Cat-5, 100m
Product Features

Up to 1.25Gb/s bi-directional data links

Hot-pluggable

Fully metallic enclosure for low EMI

Low power dissipation

Compact RJ-45 connector assembly

+3.3V single power supply

1000 Base-T operation in host systems with SGMII
interface

Industrial (-40°C to 85°C) operating temperature

Compliant with SFP MSA
Compliance
Applications

SFP MSA

1.25 Gigabit Ethernet over Cat 5 cable

FCC 47 CFR Part 15, Class B

Switch/Router to Switch/Router Link

IEEE Std. 802.3 TM-2002

High speed I/O for file severs

RoHS compliant
Description
PRE-SFP-T, a 1000Base-T copper SFP, is a high performance, cost effective Transceiver compliant with
the Gigabit Ethernet and 1000Base-T standards as specified in IEEE 802, 3-2002 and IEEE 802.3ab,
which support 1000Mbps data-rate up to 100 meters over unshielded twisted-pair Category-5 cable. The
PRE-SFP-T supports1000 Mbps full duplex data-links with 5-level Pulse Amplitude Modulation (PAM)
signals. All four pairs in the cable are used with symbol rate at 250Mb/s on each pair. The PRE-SFP-T
provides standard serial ID information compliant with SFP MSA, which can be accessed with address of
A0h via the 2-wire serial CMOS EEPROM protocol. The physical IC can also be accessed via 2-wire serial
bus at address ACh.
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
1
PRE-SFP-T
1000Base-T Copper SFP Transceiver, Cat-5, 100m
SFP to Host Connector Pin Out – Assignments and Descriptions
Pin
Signal name
VeeT
TFAULT
Description
Transmitter ground (common with receiver ground)
Transmitter Fault. Not supported
MSA Notes
1
2
3
TDIS
Transmitter Disable. PHY disabled on high or open
Note 2
4
MOD_DEF(2)
Module Definition 2. Data line for Serial ID.
Note 3
5
MOD_DEF(1)
Module Definition 1. Clock line for Serial ID.
Note 3
6
7
8
MOD_DEF(0)
Rate Select
LOS
Module Definition 0. Grounded within the module.
No connection required
Loss of Signal - High Indicates Loss of Signal
Note 3
9
VeeR
Receiver Ground (common with transmitter ground)
10
VeeR
Receiver Ground (common with transmitter ground)
11
VeeR
Receiver Ground (common with transmitter ground)
12
RD-
Receiver Inverted DATA out. AC Coupled
Note 5
13
RD+
Receiver Non-inverted DATA out. AC Coupled
Note 5
14
VeeR
Receiver Ground (common with transmitter ground)
15
VccR
Receiver Power Supply
Note 6
16
VccT
Transmitter Power Supply
Note 6
17
VeeT
Transmitter Ground (Common with Receiver Ground)
18
TD+
Transmitter Non-Inverted DATA in. AC Coupled.
Note 7
19
TD-
Transmitter Inverted DATA in. AC Coupled.
Note 7
20
Notes:
1.
2.
3.
4.
5.
6.
7.
VeeT
Note 1
Note 4
Transmitter Ground (common with receiver ground)
TX Fault is not used and is always tied to ground through a 100 ohm resistor.
TX Disable as described in the MSA is not applicable to the 1000BASE-T module, but is used for convenience as an input to reset the
internal ASIC. This pin is pulled up within the module with a 4.7 KW resistor.
Low (0 – 0.8 V): “Transceiver on”.
Between (0.8 V and 2.0 V): “Undefined.”
High (2.0 – 3.465 V): “Transceiver in reset state”
Open: “Transceiver in reset state”
Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7-10 KW resistor on the host board to a
supply less than VCCT + 0.3 V or VCCR + 0.3 V.
Mod Def 0 is tied to ground through a 100 ohm resistor to indicate that the module is present.
Mod-Def 1 is clock line of two wire serial interface for optional serial ID
Mod-Def 2 is data line of two wire serial interface for optional serial ID
LVTTL compatible with a maximum voltage of 2.5V. Not supported on HTSFP-24-111X
RD-/+: These are the differential receiver outputs. They are ac coupled 100 ohm differential lines which should be terminated with
100 ohm differential at the user SerDes. The ac coupling is done inside the module and is thus not required on the host board.
The voltage swing on these lines will be between 370 and 2000 mV differential (185 – 1000 mV single ended) when properly
terminated. These levels are compatible with CML and LVPECL voltage swings.
VCCR and VCCT are the receiver and transmitter power supplies. They are defined as 3.3 V ± 5% at the SFP connector pin. The
maximum supply current is about 300mA and the associated in-rush current will typically be no more than 30 mA above steady
state after 500 nanoseconds.
TD-/+: These are the differential transmitter inputs. They are ac coupled differential lines with 100 W differential termination
inside the module. The ac coupling is done inside the module and is thus not required on the host board. The inputs will accept
differential swings of 500 – 2400 mV (250 –1200 mV single ended), though it is recommended that values between 500 and 1200
mV differential (250 – 600 mV single ended) be used for best EMI performance. These levels are compatible with CML and
LVPECL voltage swings.
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
2
PRE-SFP-T
1000Base-T Copper SFP Transceiver, Cat-5, 100m
Pin Assignment
Figure 1: Diagram of host board connector block pin numbers and names
Electrical Power Interface, +3.3 Volts
The PRE-SFP-T has an input voltage range of 3.3 V +/- 5%. The 4 V maximum voltage is not allowed for
continuous operation.
Parameter
Supply
Current
Input
Voltage
Surge
Current
Symbol
Min.
Is
Vcc
Isurge
3.13
Typical
Max.
Units
320
375
mA
3.3
3.47
V
30
mA
Notes/Conditions
1.2W max power over full range of voltage and
temperature. See caution note below
Referenced to GND
Hot plug above steady state current. See
caution note*
*Caution: Power consumption and surge current are higher than the specified values in the SFP MSA
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
3
PRE-SFP-T
1000Base-T Copper SFP Transceiver, Cat-5, 100m
Low-Speed Signals
MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals. Both MOD_ DEF(1) and
MOD_DEF(2) must be pulled up to host_Vcc.
Parameter
Symbol
Min.
Max.
Units
Notes/Conditions
SFP Output LOW
VOL
0
0.5
V
4.7k to 10k pull-up to host_Vcc.
SFP Output HIGH
VOH
host_Vcc -0.5
host_Vcc + 0.3
V
4.7k to 10k pull-up to host_Vcc.
SFP Input LOW
VIL
0
0.8
V
4.7k to 10k pull-up to Vcc.
2
Vcc + 0.3 V
V
4.7k to 10k pull-up to Vcc.
Units
Notes/Conditions
SFP Input HIGH
High-Speed Electrical Interface
All high-speed signals are AC-coupled internally.
Transmission Line-SFP
Parameter
Symbol
Line Frequency
Min.
Typical
Max.
fL
125
MHz
5-level encoding, per IEEE 802.3
Tx Output Impedance
Zout,TX
100
Ohm
Differential
Rx Input Impedance
Zin,RX
100
Ohm
Differential
Host-SFP
Parameter
Single ended data input swing
Single ended data output swing
Rise/Fall Time
Tx Input Impedance
Rx Output Impedance
Symbol
Min.
Vinsing
250
Voutsing
350
Typical
100
Max.
Units
Notes/Conditions
1200
mV
Single ended
800
mV
Single ended
Tr,Tf
175
psec
20%-80%
Zin
50
Ohm
Single ended
Zout
50
Ohm
Single ended
General Specifications
Parameter
Data Rate
Cable Length
Symbol
Min.
BR
100
L
Typical
Max.
Units
1,000
Mb/s
100
m
Notes/Conditions
IEEE 802.3 compatible.
Category 5 UTP. BER <10-12
1. Clock tolerance is +/- 50 ppm
2. By default, the PRE-SFP-TM is a full duplex device in preferred master mode
3. Automatic crossover detection is enabled. External crossover cable is not required
4. 10/100/1000 Base-T operation requires the host system to have an SGMII interface with no clocks, With a
SERDES that does not support SGMII, the module will operate at 1000Base-T only.
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
4
PRE-SFP-T
1000Base-T Copper SFP Transceiver, Cat-5, 100m
Environmental Specifications
The PRE-SFP-T has a -40°C to +70°C case temperature as specified in below Table.
Parameter
Symbol
Min.
Operating Temperature
Top
Storage Temperature
Tsto
Typical
Max.
Units
Notes/Conditions
-40
85
°C
Case temperature
-40
100
°C
Ambient temperature
Mechanical drawing
Figure 2: Mechanical Dimensions of Transceiver
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
5
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