User manual | Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board Reference Manual

Stratix II GX EP2SGX90 Transceiver
Signal Integrity Development Board
Reference Manual
101 Innovation Drive
San Jose, CA 95134
(408) 544-7000
www.altera.com
Development Board Version:
1.0.0
Document Version:
1.0.0
Document Date:
May 2006
Copyright © 2006 Altera Corporation. All rights reserved. Altera, The Programmable Solutions Company, the stylized Altera logo, specific device designations, and all other words and logos that are identified as trademarks and/or service marks are, unless noted otherwise, the trademarks and
service marks of Altera Corporation in the U.S. and other countries. All other product or service names are the property of their respective holders. Altera products are protected under numerous U.S. and foreign patents and pending applications, maskwork rights, and copyrights. Altera warrants
performance of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make
changes to any products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information, product, or service described herein except as expressly agreed to in writing by Altera
Corporation. Altera customers are advised to obtain the latest version of device specifications before relying on any published information and before placing orders for products or services.
Part Number MNL-S2GXSIDB-1.0
ii
Development Board Version 1.0.0
Altera Corporation
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board Reference Manual
May 2006
Contents
About this Manual
Revision History ......................................................................................................................................... v
How to Contact Altera ............................................................................................................................... v
Typographic Conventions....................................................................................................................... vi
Chapter 1. Introduction
General Description................................................................................................................................
Board Component Blocks.................................................................................................................
Block Diagram ...................................................................................................................................
Target Applications...........................................................................................................................
Data Rate & Clock Frequency Support Per Protocol ...................................................................
Handling the Board ................................................................................................................................
1-1
1-2
1-3
1-3
1-4
1-4
Chapter 2. Board Components & Interfaces
Board Overview ...................................................................................................................................... 2-1
Featured Device ...................................................................................................................................... 2-6
Clocking Circuitry ................................................................................................................................. 2-7
Clock Buffer Functional Descriptions ............................................................................................ 2-9
ICS557-03 (U5): Spread Spectrum Clock Generator for PCI-Express ................................. 2-10
ICS8543 (U8): General Purpose 1:4 Differential Fanout Buffer ........................................... 2-11
ICS83023 (U7): Differential I/O to Single Converter for Trigger Clock ............................ 2-11
Interfaces ................................................................................................................................................ 2-12
SMA Connectors for High-Speed I/O ............................................................................................... 2-12
USB Interface ......................................................................................................................................... 2-14
General User Interfaces ........................................................................................................................ 2-16
Debug Header (J1) ........................................................................................................................... 2-16
LEDs (D1 Through D8) ................................................................................................................... 2-18
7-Segment Displays (D9, D10) ....................................................................................................... 2-19
Push-Button Switches (S1 Through S6) ........................................................................................ 2-21
DIP Switches (S7 and S8) ................................................................................................................ 2-22
Clock Selection Switches (S9 and S10) ......................................................................................... 2-24
Power Supply ....................................................................................................................................... 2-25
Thermal Management Block ............................................................................................................... 2-27
FPGA Configuration Block ................................................................................................................. 2-28
JTAG Configuration ........................................................................................................................ 2-28
Active Serial Configuration Using EPCS64 Device (U22) ......................................................... 2-28
Flash Memory ....................................................................................................................................... 2-30
Altera Corporation
May 2006
iii
Preliminary
Contents
iv
Preliminary
Stratix II GX EP2GX90 Signal Integrity Development Board Reference Manual
Altera Corporation
May 2006
About this Manual
Revision History
The table below displays the revision history for the chapters in this
reference manual.
Chapter
Date
Version
All
May 2006
1.0.0
Changes Made
First publication
This reference manual provides comprehensive information about the
Altera® Stratix® II GX family of devices and the Stratix II GX EP2SGX90
transceiver signal integrity development board.
How to Contact
Altera
Information Type
Technical support
Product literature
For the most up-to-date information about Altera products, go to the
Altera world-wide web site at www.altera.com. For technical support on
this product, go to www.altera.com/mysupport. For additional
information about Altera products, consult the sources shown below.
USA & Canada
All Other Locations
www.altera.com/mysupport/
www.altera.com/mysupport/
(800) 800-EPLD (3753)
(7:00 a.m. to 5:00 p.m. Pacific Time)
+1 408-544-8767
7:00 a.m. to 5:00 p.m. (GMT -8:00)
Pacific Time
www.altera.com
www.altera.com
Altera literature services
[email protected]
[email protected]
Non-technical customer
service
(800) 767-3753
+ 1 408-544-7000
7:00 a.m. to 5:00 p.m. (GMT -8:00)
Pacific Time
FTP site
ftp.altera.com
ftp.altera.com
Altera Corporation
May 2006
v
Preliminary
Typographic Conventions Stratix II GX EP2GX90 Signal Integrity Development Board Reference Manual
Typographic
Conventions
Visual Cue
This document uses the typographic conventions shown below.
Meaning
Bold Type with Initial
Capital Letters
Command names, dialog box titles, checkbox options, and dialog box options are
shown in bold, initial capital letters. Example: Save As dialog box.
bold type
External timing parameters, directory names, project names, disk drive names,
filenames, filename extensions, and software utility names are shown in bold
type. Examples: fMAX, \qdesigns directory, d: drive, chiptrip.gdf file.
Italic Type with Initial Capital
Letters
Document titles are shown in italic type with initial capital letters. Example: AN 75:
High-Speed Board Design.
Italic type
Internal timing parameters and variables are shown in italic type.
Examples: tPIA, n + 1.
Variable names are enclosed in angle brackets (< >) and shown in italic type.
Example: <file name>, <project name>.pof file.
Initial Capital Letters
Keyboard keys and menu names are shown with initial capital letters. Examples:
Delete key, the Options menu.
“Subheading Title”
References to sections within a document and titles of on-line help topics are
shown in quotation marks. Example: “Typographic Conventions.”
Courier type
Signal and port names are shown in lowercase Courier type. Examples: data1,
tdi, input. Active-low signals are denoted by suffix n, e.g., resetn.
Anything that must be typed exactly as it appears is shown in Courier type. For
example: c:\qdesigns\tutorial\chiptrip.gdf. Also, sections of an
actual file, such as a Report File, references to parts of files (e.g., the AHDL
keyword SUBDESIGN), as well as logic function names (e.g., TRI) are shown in
Courier.
1., 2., 3., and
a., b., c., etc.
Numbered steps are used in a list of items when the sequence of the items is
important, such as the steps listed in a procedure.
■
Bullets are used in a list of items when the sequence of the items is not important.
●
•
v
The checkmark indicates a procedure that consists of one step only.
1
The hand points to information that requires special attention.
c
The caution indicates required information that needs special consideration and
understanding and should be read prior to starting or continuing with the
procedure or process.
w
The warning indicates information that should be read prior to starting or
continuing the procedure or processes
r
The angled arrow indicates you should press the Enter key.
f
The feet direct you to more information on a particular topic.
vi
Preliminary
Altera Corporation
May 2006
1. Introduction
General
Description
The Stratix® II GX EP2SGX90 transceiver signal integrity development
board provides a hardware platform for developing and prototyping
high-speed designs using power-efficient Stratix II GX devices. The
transceiver technology embedded in Stratix II GX devices ensures that
signal integrity extends to high frequencies while also providing a
power-efficient, single-chip solution that supports the following
high-speed serial protocols:
■
■
■
■
■
■
■
■
PCI-Express
CEI-6G
Gigabit Ethernet
XAUI
Serial RapidIO™
SONET Backplane
SDI
SerialLite II
As board designs move into the Gbps space, it is increasingly more
difficult to maintain signal integrity. In fact, increasing data rates for both
I/O interfaces and memory interfaces can present significant data
transmission problems and performance issues.
The Stratix II GX device’s embedded transceivers provide enhanced
transmit pre-emphasis technology that conditions the signal prior to
transmission as well as programmable receiver equalization circuitry.
Also, because the Stratix II GX device’s embedded transceivers have
built-in clock data recovery, you do not have to route the clock and data
on the board, which greatly simplifies high-speed board designs.
To further simplify the process, Altera® provides a reference design for
use as either a design starting point or an experimental platform. The
reference design is designed and tested by Altera engineers and
distributed with the Transceiver SI Development Kit, Stratix II GX
Edition (ordering code: DK-SI-2SGX90N).
Altera Corporation
May 2006
Reference Manual
1–1
Preliminary
General Description
Board Component Blocks
The board provides the following major component blocks:
■
■
■
■
■
■
■
■
Flexible clock management system
●
Four high-speed clock oscillators to support a variety of
protocols:
• 156.25 MHz
• 25, 100, 125, and 200-MHz from the clock generator
• 50 MHz
●
SMA connectors for clock input and output
High-speed I/O & SMA connectors
●
SMA connectors for high-speed interfaces
●
Six channels of transmit differential output and six channels of
receive differential input at up to 6.375 Gbps
Power-supply management
●
5-V, 3.3-V, and 1.2-V switching regulators
●
3.3-V and 1.5-V/1.2-V linear regulators
USB interface
●
Operates like a COM port on a host PC
●
Eliminates the need for:
• Full USB software and hardware implementation
• USB software driver
General user-interface
●
Debugging header
●
LEDs
●
7-Segment LEDs
●
Push-buttons
●
DIP switches
Thermal management
Flash memory
●
56-pin TSOP package
●
Compliant with common Flash interface (CFI)
●
Reduces development time when used with the Altera SOPC
Builder CFI controller module
FPGA configuration
●
JTAG interface header
●
Active serial configuration scheme using EPCS64 device
• Configures Stratix II GX device on power-up
1–2
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Introduction
Block Diagram
Figure 1–1 shows a functional block diagram of the Stratix II GX
EP2SGX90 transceiver signal integrity development board.
Figure 1–1. Stratix II GX EP2SGX90 Transceiver Signal Integrity Development
Board Block Diagram
Power Supply
Management Block
with Switching &
Linear Regulators
SMA
Connectors
for High-Speed
Interfaces
Clock
Management
Unit
USB
Interface
Debugging
Header
Stratix II GX
Device
LEDs
7-Segment Displays
Push Buttons
Thermal
Management
Block
General
User
Interface
Block
DIP Switches
Flash Memory
Active Serial
Configuration Using
EPCS64 Device
JTAG
Configuration
FPGA
Configuation
Block
Target Applications
The board is used for the following applications:
■
■
■
■
■
■
■
Altera Corporation
May 2006
Demonstrating key Stratix II GX device features
Device qualification, e.g., jitter, pre-emphasis, equalization, and
signal integrity testing, as well as receiver sensitivity.
De-coupling Quartus® II software, transceiver architecture, and
Altera MegaWizard® Plug-In Manager demonstrations (supporting
devices and interfaces included)
Demonstrating Stratix II GX device transceiver features
Characterization testing of high-speed serial interfaces
Interoperability testing between various devices via on-board SMA
connectors
Power supply evaluation (on-board regulation and banana jack
options)
Reference Manual
1–3
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Handling the Board
■
■
Clocking evaluation to qualify the Stratix II GX device with user
clock sources
Demonstrate signal integrity features on a standalone basis
Data Rate & Clock Frequency Support Per Protocol
Table 1–1 shows the board’s data rate and clock frequency support per
protocol.
Table 1–1. Board Protocol Support
Data Rate
(Gbps)
Protocol
Clock
Frequency
(MHz)
Clock Source
6G - CEI
6.25
156.25
On board oscillator
5G scrambled
5
156.25
On board oscillator
4G FC, (1)
4.25
–
SMA clock input
XAUI
3.125
156.25
On board oscillator
PCI-Express/PIPE
2.5
100
On board oscillator
SONET backplane
2.488
–
SMA clock input
2G FC, (1)
2.125
–
SMA clock input
HD - SDI
1.485
–
SMA clock input
GIGE
1.25
125
On board oscillator
1G FC, (1)
1.063
–
SMA clock input
Note to Table 1–1:
(1)
Handling the
Board
There is no support planned for Fibre channel protocol. This table only shows
supported data rate.
When handling the board, it is important to observe the following
precaution:
w
Static Discharge Precaution—Without proper anti-static
handling, the board can be damaged. Therefore, use anti-static
handling precautions when touching the board.
1–4
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
2. Board Components &
Interfaces
Board Overview
This chapter provides operational and connectivity detail for the board’s
major components and interfaces and is divided into the following major
blocks:
■
■
■
■
■
■
■
1
Featured device
Clocking circuitry
Interfaces
●
SMA connectors for high-speed I/O
●
USB interface
●
General user interfaces
Power supply
Thermal management
FPGA configuration
Flash memory
Board schematics, the physical layout database, and
manufacturing files for the Stratix® II GX EP2SGX90 transceiver
signal integrity development board are included in the
Transceiver SI Development Kit, Stratix II GX Edition in the
following directory:
<install path>\SIIGX_SI_Kit-v1.0.0\Docs\BoardDesignFiles
f
Altera Corporation
May 2006
For information on powering-up the Stratix II GX transceiver signal
integrity development board and installing the demo software, refer to
the Transceiver SI Development Kit, Stratix II GX Edition Getting Started
User Guide.
Reference Manual
2–1
Preliminary
Board Overview
Figure 2–1 shows the top view of the Stratix II GX EP2SGX90 transceiver
signal integrity development board.
Figure 2–1. Top View of the Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Temperature Sensor
with Alarm (U17)
Stratix II GX Device (U20)
SMA Transmit &
Receive Connectors
(J26 through J49)
50-MHz Oscillator
Used for System Clock (U10)
Configuration
Done LED (D14)
Optional Power Input
Connection Jacks (J15, J17-21)
SMA Input Clock
Connectors for FPGA (J12, J14)
Jumper Header for
VCCH Voltage (J50)
Power LED (D13)
10-pin Configuration Header
for EPCS64 Device (J23)
10-pin JTAG Configuration
Header for FPGA (J24)
Power Switch (S10)
Power Supply Input
Dual 7-Segment
Displays (D9, D10)
USB Interface (U2)
USB Connector (J2)
16 Mbytes Flash
Memory (U19)
User DIP Switch
Bank (S7)
SMA Output Clock Connectors
Reference Clock for Quad 1
Transceivers (J7, J8)
SMA Output Clock Connectors
Reference Clock for Quad 3
Transceivers (J9, J10)
156.25-MHz
Oscillator (U9)
Differential
Fan-out
Buffer (U8)
25-MHz
Crystal (U6)
Differential to
Single-Ended
Buffer (U7)
Clock
Generator (U5)
Clock
User Push-Button
Setting
Switches (S1 through S6)
DIP Switch
Bank (S8) User LEDs
(D1 through D8)
Debug
Header (J1)
EPCS64 Device (U22)
Slide
Switch (S9)
2–2
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Figure 2–2 shows the diagonal view of the Stratix II GX EP2SGX90
transceiver signal integrity development board.
Figure 2–2. Diagonal View of the Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Reference Manual
2–3
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Board Overview
Table 2–1 describes the components and lists their corresponding board
references.
Table 2–1. Stratix II GX Transceiver SI Development Board Components & Interfaces (Part 1 of 3)
Type
Component/
Interface
Board
Reference
Description
Page
Featured
Device
FPGA
Stratix II GX
device
U20
EP2SGX90EF1152C3NES or EP2SGX90EF35C3NES
2–6
I/O
Push-button
switches
S1-S6
Six push-button switches for user-defined, logic inputs.
2–21
I/O
DIP switch
S7
Eight toggle DIP switches for user-defined, logic inputs.
2–22
User
Interfaces
I/O
LEDs
D1-D8
Eight user-defined LEDs
2–18
I/O
Dual sevensegment
display
D9, D10
Dual seven-segment display
2–19
I/O
Slide switch
S9
Double-pole, single-throw slide switch for selecting
between the 156.25 MHZ oscillator and the SMA external
clock inputs to supply the clocks to the three quad
transceivers.
2–24
I/O
DIP switch
S8
Eight toggle DIP switches for selecting PCIe clock speed, 2–22
PCIe clock spread-spectrum setting, and the output enable
of the clocks to the three quad transceivers.
Debug header J1
A twenty-pin connector that is connected to 20 general I/Os 2–16
on the FPGA.
Debugging Interfaces
I/O
Connections & Interfaces
I/O
USB UART
U2, J2
2–14
USB interface to the Stratix II GX device for device
configuration and communication with applications running
on the device.
I/O
SMA transmit
and receive
connectors
J26-J49
SMA connectors with the transmit and receive signals from 2–12
the quad transceivers
Connector
J23
Header for programming the EPCS64 serial configuration
device.
2–28
Input
Connector
J24
Header for configuring the Stratix II GX device.
2–28
Input
Jumper
header
J25
2–28
Jumper header to select which JTAG source the board
uses, i.e., the JTAG header configuration or the USB JTAG
configuration.
Configuration & Reset
Input
2–4
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Table 2–1. Stratix II GX Transceiver SI Development Board Components & Interfaces (Part 2 of 3)
Type
Display
Component/
Interface
Configuration
done LED
Board
Reference
D14
Description
Page
LED that illuminates upon successful FPGA configuration. 2–28
Memory
Flash
16 Mbytes of U19
flash memory
16 Mbytes of non-volatile memory.
2–30
Serial flash
64 Mbits of
serial flash
memory
U22
Altera® EPCS64 low-cost serial configuration device to
configure the Stratix II GX device
2–28
Crystal
Clock
Generator
Clock
U6
Crystal 25MHz
2–7
Clock
U5
Spread spectrum clock generator for 25-MHz, 100-MHz,
125-MHz, and 200-MHz clocks.
2–10
Oscillator
Clock
U9
156.25-MHZ oscillator
2–7
Clock Circuitry
Buffer
Clock
U8
1:4 differential fan-out buffer
2–9
Buffer
Clock
U7
Differential to single-ended converter for providing trigger
clocks.
2–9
Input
SMA external
clock input
connectors
J5, J6
SMA connectors for providing an external clock to the three 2–12
quad transceivers.
Output
SMA trigger
clock
connector
J3
SMA connector for the PCIe trigger clock.
2–12
Output
SMA trigger
clock
connector
J4
SMA connector for the basic trigger clock associated with
the three quad transceivers.
2–12
Oscillator
Clock
U10
50-MHz clock oscillator used for the system clock.
2–7
Input
SMA input
clock
connectors
J7, J8
Reference clock input for quad 1 transceiver
2–12
Input
SMA input
clock
connectors
J9, J10
Reference clock input for quad 3 transceiver
2–12
Output
SMA output
clock
connectors
J12, J14
Output clock from Stratix II GX
2–12
Altera Corporation
May 2006
Reference Manual
2–5
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Featured Device
Table 2–1. Stratix II GX Transceiver SI Development Board Components & Interfaces (Part 3 of 3)
Type
Component/
Interface
Board
Reference
Description
Page
Power Supply
Input
DC power
jack
Input
Power switch
S10
Switches the board’s power on and off.
2–25
Input
Optional
power input
connection
jacks
J17, J15,
J18, J19,
J20, J21
External power supply can be connected for high current
applications.
2–25
Input
Jumper
header
J50
2–25
Jumper header for selecting between 1.5-V DC and
1.2-V DC supplied to the quad transceivers. Jumper pins 1
and 2 select 1.5-V output, and jumper pins 2 and 3 select
1.2-V output.
Output
Temperature
sensor
U17
Performs thermal management, i.e., turning the cooling fan 2–25
on and off to regulate the FPGA temperature.
Featured
Device
J16
16-V DC unregulated power source.
2–25
The Transceiver SI Development Kit, Stratix II GX Edition features the
EP2SGX90EF1152 FPGA (U20) in a 1152-pin FineLine BGA® (FBGA)
package. Table 2–2 lists some Stratix II GX device features.
Table 2–2. Stratix II GX Features
Architectural
Feature
Results
Altera’s thirdgeneration FPGA
with embedded
transceivers
●
●
●
●
Innovative clock
management
system
●
Based on the
1.2-V, 90-nm
SRAM process
●
●
●
●
●
Provides a robust design solution for the most popular high-speed serial interfaces
Provides optimum jitter performance across the entire operating range of 622 Mbps to
6.375 Gbps
Provides best-in class signal integrity performance
Offers enhanced transmit pre-emphasis technology, programmable receiver
equalization, and output voltage control
Clock signals are automatically routed to the appropriate destination
Greatly simplifies high-speed board designs
Internal clock frequency of up to 500 MHz
Provides up to 6.7 Mbits of on-chip TriMatrix™ memory
Provides up to 63 DSP blocks for efficient implementation of high-performance filters
and other DSP functions
Supports a wide range of external memory interfaces
f
For additional information about Altera devices, go to
www.altera.com/products/devices.
2–6
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
You can configure the Stratix II GX device in one of two ways:
■
■
Clocking
Circuitry
Active serial configuration via the EPCS64 device
JTAG configuration
The Stratix II GX transceiver signal integrity development board’s
clocking circuitry is designed to be flexible and easy to use. In fact, with
the Stratix II GX device’s embedded transceivers, you do not need to
route the board’s clock and data signals. Instead, the embedded
transceivers route the clock and data signals to the appropriate
destination.
The Stratix II GX devices have dedicated phase-locked loops (PLLs) for
high-speed transceivers, enhanced PLLs for spread-spectrum and general
purpose clocking, and fast PLLs for high-speed differential I/O clocking,
which support the high-speed interfaces described in this chapter. See
Figure 2–3.
The clocking block is comprised of:
■
■
■
High-speed clock oscillators:
• 156.25-MHz oscillator
• 50-MHz oscillator
25 MHz crystal
SMA connectors for clocking input and output signals
Table 2–3 lists the board’s clocking parts list.
Table 2–3. Clocking Block Parts List
Part Name
Altera Corporation
May 2006
Number of
Board
Units
Reference
Purpose
ICS557-03
1
U5
Spread spectrum PLL
ICS8543
1
U8
Clock buffer to input
multiplexer to 4 LVDS outputs
ICS830231
1
U7
Clock buffer differential to
single-ended converter
SMA connectors
12
J3 - J14
High-speed interface support
25-MHz crystal
1
U6
Supports the ICS557-03 clock
buffer
156.25-MHz oscillator
1
U9
Supports the OIF, CEI-6G, and
XAUI protocols
50-MHz oscillator
1
U10
Supports the ICS8543 clock
buffer
Reference Manual
2–7
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Clocking Circuitry
Table 2–4 lists the clocking circuitry’s board references, speeds, interface
support, and manufacturing information.
Table 2–4. Board Clocking Circuitry
Board
Reference
Speed
I/O Support
Manufacturing Information
SMD package, 3.3V, low-voltage
positive emitter coupled logic
(LVPECL) output
Additional Information
Supports the OIF, CEI-6G, and
XAUI protocols.
U9
156.25 MHz XAUI
CEI-6G
U5
25, 100,
125, and
200 MHz
PCI-Express 16-pin TSSOP package, 3.3V, and Spread-spectrum clock
GbE
high-speed current steering logic
generator for PCIe clocks.
(HCSL) output
The integrated circuit system’s
Part # ICS557-03
(ICS) PLL uses a 25 MHz crystal
input and produces two pairs of
differential outputs at 25-MHz,
100-MHz, 125-MHz, and
200-MHz clock frequencies. The
PLL also provides spread
selection of ±25%, -0.5%,
-0.75%, and no spread.
U7
25 MHz
Differential
I/O to
single-ended
buffer
Small outline integrated circuit
(SOIC) 8-pin package, 3.3V, and
LVDS/LVPECL/HCSL input and
LVCOMS output
Differential I/O to LVCMOS
translator.
Part # ICS83023
U8
50 MHz
General
purpose
clocking
20-pin TSSOP package,
3.3V, LVPECL/LVDS input and
LVDS output
A 2:1 multiplexer to a 4:1
low-voltage differential signaling
(LVDS) fanout buffer.
Part # ICS8543
2–8
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Figure 2–3 shows the clock signals passing through logic translators and
automatically routing to the appropriate destination.
Figure 2–3. Clocking Circuitry Automatic Routing Paths
Spread Spectrum
Clock Generator for PCI-Express (U5)
refclk0 in Quad2
25 MHz
Oscillator
Differential I/O to
LVCMOS Translator (U7)
ICS557-03
General Purpose
Clocking Buffer:
2:1 Multiplexer
to a 1:4 LVDS
Fanout
Buffer (U8)
PCI-Express Trigger Clock (J3)
ICS83023
156 MHz
Oscillator
ICS8543
SMA Connector Clock
Input (P = J5, N = J6)
Basic Trigger Clock (J4)
refclk1 in Quad1
refclk1 in Quad2
refclk1 in Quad3
50 MHz
Oscillator
SMA
Connector
Clock Input
(P= J12, N = J14)
Global Clock for FPGA Block
refclk0 in Quad1
(P = J7, N = J8)
Global Clock for FPGA Block
refclk0 in Quad3
(P = J9, N = J10)
Output Clock
from FPGA Side
(P = J11, N = J13)
= LVPECL/LVDS Input
= HCSL Output
= LVDS Output
Clock Buffer Functional Descriptions
This section provides functional descriptions for the board’s three clock
buffers:
■
■
■
Altera Corporation
May 2006
ICS557-03 (U5)
ICS8543 (U8)
ICS83023 (U7)
Reference Manual
2–9
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Clocking Circuitry
ICS557-03 (U5): Spread Spectrum Clock Generator for PCI-Express
The ICS557-03 is a spread spectrum clock generator supporting PCIe and
Ethernet protocol requirements. The device is used to substantially
reduce electromagnetic interference (EMI) in PC or embedded systems.
The device provides two differential spread spectrum outputs, and is pinconfigured for clock and spread selection. Using phase-locked loop (PLL)
techniques, the device takes a 25 MHz crystal input and produces two
pairs of differential outputs (HCSL) at 25 MHz, 100 MHz, 125 MHz and
200 MHz clock frequencies. The device also provides spread selection of
±0.25%, -0.5%, -0.75%, and no spread.
Table 2–5 lists output clock DIP switch settings.
Table 2–5. Output Clock Setting DIP Switch Pinout (S8)
Switch
25 MHz
100 MHz
125 MHz
200 MHz
SW1
Closed
Open
Closed
Open
SW2
Closed
Closed
Open
Open
Table 2–6 lists spread spectrum output selection DIP switch settings.
Table 2–6. Spread Spectrum Output Selection Setting (S8)
Switch
Center =/-0.25
Down -0.5
Down -0.75
No Spread
SW3
Closed
Open
Closed
Open
SW4
Closed
Closed
Open
Open
2–10
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
ICS8543 (U8): General Purpose 1:4 Differential Fanout Buffer
The ICS8543 is a general purpose clock buffer with a 2:1 multiplexer input
and a 1:4 differential fanout. The clk_sel signal determines which clock
input (i.e., clk or pclk) is used; the chosen signal is then converted to
four output clocks. See Figure 2–4.
Figure 2–4. ICS8543 Clock Buffer Block Diagram
clk_en
D
Q
LE
clk
nclk
0
pclk
npclk
clk_sel
Q0
nQ0
1
Q1
nQ1
Q2
nQ2
Q3
nQ3
oe
ICS83023 (U7): Differential I/O to Single Converter for Trigger Clock
The ICS83023 is a differential I/O to a single-ended clock buffer, which is
used for both the PCI-Express and Basic trigger clocks. See Figure 2–5.
Figure 2–5. ICS83023 Clock Buffer Block Diagram
clk0
nclk0
clk1
nclk1
Altera Corporation
May 2006
Q0
Q1
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2–11
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Interfaces
Interfaces
This section describes the Stratix II GX EPS2GX90 transceiver signal
integrity development board’s interface architecture. There are three
main interface blocks:
■
■
■
SMA connectors for high-speed I/O
USB interface
General user interfaces
SMA Connectors for High-Speed I/O
The Stratix II GX EPS2GX90 transceiver signal integrity development
board has SMA connectors supporting the most commonly-used, highspeed interface protocols. The SMA connectors are helpful for equipment
testing. The board has six channels of transmit (TX) differential output as
well as six channels of receive (RX) differential input running at up to
6.375 Gbps. See Figure 2–6.
Table 2–7 lists the SMA-to-FPGA pinout table.
Table 2–7. SMA-to-FPGA Pinout Table
SMA Board
Reference
Schematic Signal Name
Stratix II GX (U20)
Pin Number
J7
REFCLKOP_QUAD1
G1
J8
REFCLKON_QUAD1
G2
J9
REFCLKOP_QUAD3
AK4
J10
REFCLKON_QUAD3
AK5
J11
CLOCKOUT_P
AP17
J12
GLK_P
AP18
J13
CLOCKOUT_N
AN17
J14
GCLK_N
AP19
2–12
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Figure 2–6. SMA Connector Block Diagram
SMA Connectors
(J27, J28)
Transceiver Block 1
1 Channel
(J29, J26)
Stratix II GX Device
Transceiver Block
(J43, J45)
(J42, J44)
(J39, J40)
Transceiver Block 2
4 Channels
(J38, J41)
(J32, 33)
(J30, J31)
(J36, J37)
(J34, 35)
(J47, J48)
Transceiver Block 3
1 Channel
(J49, J46)
TX: 40 inch trace length
Table 2–8 lists transceiver block’s transmit and receive signals,
corresponding SMA reference designators and FPGA pins.
Table 2–8. Transceiver Block Corresponding Signals, SMA Designator, and
FPGA Pin (Part 1 of 2)
Block
Altera Corporation
May 2006
Signal
SMA Reference
Designator
Stratix II GX Pin
Transceiver Block 1, TX_P0
1 Channel
TX_N0
J27
A4
J28
A5
RX_P0
J29
C1
RX_N0
J26
C2
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Interfaces
Table 2–8. Transceiver Block Corresponding Signals, SMA Designator, and
FPGA Pin (Part 2 of 2)
Block
Signal
SMA Reference
Designator
Stratix II GX Pin
Transceiver Block 2, TX_P4
4 Channels
TX_N4
J43
AB4
J45
AB5
RX_P4
J42
AB1
RX_N4
J44
AB2
TX_P3
J39
Y4
TX_N3
J40
Y5
RX_P3
J38
Y1
RX_N3
J41
Y2
TX_P2
J32
N4
TX_N2
J33
N5
RX_P2
J30
N1
RX_N2
J31
N2
TX_P1
J36
R4
TX_N1
J37
R5
RX_P1
J34
R1
RX_N1
J35
R2
Transceiver Block 3, TX_P5
1 Channel
TX_N5
J47
AF4
J48
AF5
RX_P5
J49
AF1
RX_N5
J46
AF2
USB Interface
The USB interface to the board provides a communication port to a host
PC. A USB physical connection is used to enable laptops without RS232
ports to communicate with the demo board.
To simplify the USB interface, the board contains a FTDI FT2232L USB
universal asynchronous receiver/transmitter (UART) circuit. The UART
eliminates the need for full USB software and hardware implementation.
In addition, the USB UART design allows the software to be designed as
if writing directly to the host PC’s COM port, which eliminates the need
for designing a USB software driver (see Figure 2–7).
2–14
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Also, the 1 M Baud rate should be sufficient for the intended
communication applications. The FTDI circuit also has a downloadable
non-license USB direct driver and SLL software interface that configures
the USB connection into the host PC’s COM port.
Figure 2–7. USB Interface to Stratix II GX Transceiver Signal Integrity
Development Board
USB PHY
Connector
FT2232L
USB UART
Stratix II GX
Device
Table 2–9 lists the USB interface to FPGA pinout.
Table 2–9. USB Interface to FPGA Pinout Table
Altera Corporation
May 2006
USB Interface (U2)
Pin Number
Schematic Signal Name
Stratix II GX (U20)
Pin Number
40
UART_DATA0
F30
39
UART_DATA1
G31
38
UART_DATA2
D33
37
UART_DATA3
D32
36
UART_DATA4
H29
35
UART_DATA5
G30
33
UART_DATA6
E32
32
UART_DATA7
E31
30
UART_DATA8
J28
29
UART_DATA9
K27
28
UART_DATA10
E34
27
UART_DATA11
D34
Reference Manual
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Interfaces
General User Interfaces
To allow you to fully leverage the I/O capabilities of the Stratix II GX
device for debugging, control, and monitoring purposes, the following
general user interfaces are available on the board:
■
■
■
■
■
■
Debug Header
LEDs
7-segment display
LCD interface
Push buttons
DIP switches
Debug Header (J1)
Board reference J1 is a simple 20-pin debug header connected to the
Stratix II GX device’s general user I/O. The form factor is a dual row
header such as a FCI 20-pin header (Samtec TSW-110-07-G-D). Table 2–10
lists the schematic signal name and the corresponding Stratix II GX
device pin number.
Table 2–10. Debug Header Pin-Out (Part 1 of 2)
Header Number
Schematic Signal Name
Stratix II GX (U20)
Pin Number
1
D_HED0
AB30
2
D_HED1
AA23
3
D_HED2
AB23
4
D_HED3
AB33
5
D_HED4
AB32
6
D_HED5
AA26
7
D_HED6
AA25
8
D_HED7
AA34
9
D_HED8
AB34
10
D_HED9
AB29
11
D_HED10
AB28
12
D_HED11
AC32
13
D_HED12
AC31
14
D_HED13
AB24
15
D_HED14
AC24
16
D_HED15
AC34
17
D_HED16
AC33
2–16
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Table 2–10. Debug Header Pin-Out (Part 2 of 2)
Header Number
Stratix II GX (U20)
Pin Number
Schematic Signal Name
18
D_HED17
AB26
19
D_HED18
AB25
20
D_HED19
AD32
Figure 2–8 shows the debug header’s schematic.
Figure 2–8. Debug Header (J1) Schematic
J1
D_HED0
1
D_HED2
D_HED4
D_HED6
D_HED8
D_HED10
D_HED12
3
5
7
9
11
13
D_HED14
D_HED16
15
17
16
18
D_HED18
19
20
Debug
Header
2
4
6
8
10
12
14
D_HED1
D_HED3
D_HED5
D_HED7
D_HED9
D_HED11
D_HED13
D_HED15
D_HED17
D_HED19
CONN_PCB_10X2
Figure 2–9 shows the debug header’s board labels.
Figure 2–9. Debug Header (J1) Board Labels
Altera Corporation
May 2006
Reference Manual
2–17
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Interfaces
LEDs (D1 Through D8)
The board provides eight user-defined LEDs. D1 through D8 are
connected to general purpose I/O pins on the Stratix II GX EPS2GX90
device. When the EP2SGX90 device drives logic 0, the corresponding LED
illuminates. Table 2–11 lists the schematic signal name and the
corresponding Stratix II GX device’s pin number.
Table 2–11. User-Defined LED Pin-Out
Board
Reference
Schematic Signal Name
Stratix II GX (U20)
Pin Number
D1
USER_LED0
AE33
D2
USER_LED1
AE32
D3
USER_LED2
AD26
D4
USER_LED3
AD25
D5
USER_LED4
AD34
D6
USER_LED5
AE34
D7
USER_LED6
AC29
D8
USER_LED7
AC28
Figure 2–10 shows a board image of the user-defined LEDs.
Figure 2–10. User-Defined LEDs
2–18
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Figure 2–11 shows the LED schematic.
Figure 2–11. LED Schematic
3V3
1
D1
LED GREEN
2
1
D2
LED GREEN
2
1
D3
LED GREEN
2
1
D4
LED GREEN
2
1
D5
LED GREEN
2
1
D6
LED GREEN
2
1
D7
LED GREEN
2
1
D8
LED GREEN
2
RN2
R_PACK-4
7
7
6
5
1
2
3
4
RN3
R_PACK-4
7
7
6
5
1
2
3
4
USER_LED0
USER_LED2
USER_LED3
USER_LED4
USER_LED5
USER_LED6
USER_LED7
USER_LED8
220Ω
7-Segment Displays (D9, D10)
Board references D9 and D10 are dual user-defined, seven-segment
displays. The primary function of the 7-segment displays is to display the
board’s hardware version, which simplifies board revision control.
To save board space, the 7-segment displays are a small form factor. Each
segment is individually controlled by a general purpose I/O pin. When
the EP2SGX90 FPGA pin drives logic 0, the corresponding segment
illuminates. See Figure 2–12.
Altera Corporation
May 2006
Reference Manual
2–19
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Interfaces
Table 2–12 lists the 7-segment display pinouts.
Table 2–12. 7-Segment Display Pin-Outs
Board Reference D9
Board Reference D10
Segment
Display Name
Schematic
Signal Name
Stratix II GX
Pin Name
Segment
Display Name
Schematic
Signal Name
Stratix II GX
Pin Name
A
DIG_1_A
W31
A
DIG_2_A
Y32
B
DIG_1_B
W30
B
DIG_2_B
Y31
C
DIG_1_C
V23
C
DIG_2_C
W28
D
DIG_1_D
W23
D
DIG_2_D
Y29
E
DIG_1_E
W33
E
DIG_2_E
Y34
F
DIG_1_F
W32
F
DIG_2_F
Y33
G
DIG_1_G
Y24
G
DIG_2_G
Y28
DP
DIG_1_DP
Y23
DP
DIG_2_DP
Y27
Figure 2–12 shows the board image and name of each segment.
Figure 2–12. Segment Names for the Dual 7-Segment Displays
D9
D10
A
A
F
B
F
G
E
G
C
D
B
E
DP
2–20
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
C
D
DP
Altera Corporation
May 2006
Board Components & Interfaces
Push-Button Switches (S1 Through S6)
Board references S1 through S6 are push-button switches allowing
general user I/O interfaces to the Stratix II GX device.
S1-S6 are user-defined, momentary-contact push-button switches used to
provide stimulus to a user design on the board. Each push-button is
connected through debounce circuitry to a Stratix II GX general-purpose
I/O pin as listed in Table 2–13. When the switch is pressed and held
down, the device pin is set to logic 0, when the switch is released, the
device pin is set to logic 1.
The push button device is a small form factor switch similar to the
Panasonic Tactile Switches (EVQPAC07K). Table 2–13 provides
operational descriptions and schematic signal names.
Table 2–13. Push-Button Switches (S1 Through S6)
Push-Button
Name
Board
Reference
Designator
Schematic Signal
Name
PB0
S1
PB0_IN
AD28
PB1
S2
PB1_IN
AF34
PB2
S3
PB2_IN
AF33
PB3
S4
PB3_IN
AF30
PB4
S5
PB4_IN
AF29
Stratix II GX Device
(U20) Pin Number
Note to Table 2–13:
(1)
Altera Corporation
May 2006
The PB5 is a special purpose button, called DEV_CLRn, connected to the AH20 pin
of the FPGA. The PB5 clears the FPGA data.
Reference Manual
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Interfaces
Figure 2–13 shows the push-button switch circuitry.
Figure 2–13. Push-Button Switch Circuitry
Push-Button Switch Circuitry
3V3
S1
A
A2
B
B2
PB0_IN
R1
1K
B
B2
PB1_IN
R2
1K
B
B2
PB2_IN
R3
1K
B
B2
PB3_IN
R4
1K
B
B2
PB3_IN
R5
1K
B
B2
PB5_IN
R6
1K
S2
A
A2
S3
A
A2
S4
A
A2
S5
A
A2
S6
A
A2
Figure 2–14 shows the push-button board image.
Figure 2–14. Push-Button Board Image
DIP Switches (S7 and S8)
Board references S7 and S8 are banks of six DIP switches. The DIP
switches in S7 are user-defined, and DIP switches in S8 control the PCIe
clock speed, PCIe clock spread spectrum setting, and the output enable of
the clocks to the three quad transceivers. In the open position, the selected
signal is driven to logic 1. In the closed position, the selected signal is
driven to logic 0.
2–22
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Altera Corporation
May 2006
Board Components & Interfaces
Table 2–14 lists the S7 output clock DIP switch settings.
Table 2–14. User-Defined DIP Switch Pinout (S7)
S7 Switch
Stratix II GX Pin
S7_1
AH33
S7_2
AH32
S7_3
AF28
S7_4
AF27
S7_5
AJ34
S7_6
AJ33
S7_7
AG29
S7_8
AG28
Figure 2–15 shows the DIP switch board image.
Figure 2–15. DIP Switch Board Image
Table 2–15 lists the S8 output clock DIP switch settings.
Table 2–15. Output Clock Setting DIP Switch Pinout (S8)
Switch
25 MHz
100 MHz
125 MHz
200 MHz
SW1
Closed
Open
Closed
Open
SW2
Closed
Closed
Open
Open
Altera Corporation
May 2006
Reference Manual
2–23
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Interfaces
Table 2–16 lists the spread spectrum output selection DIP switch settings.
Table 2–16. Spread Spectrum Output Selection Setting (S8)
Switch
Center =/-0.25
Down -0.5
Down -0.75
No Spread
SW3
Closed
Open
Closed
Open
SW4
Closed
Closed
Open
Open
Table 2–17 lists PCIe clock and quad transceiver clock DIP switch
settings.
Table 2–17. PCIe Clock & Quad Transceiver Clock DIP Switch Settings (S8)
PCIe Clock DIP Switch Setting
Switch
SW5
Enable Clock
Open
Quad Transceiver Clock DIP Switch Setting
Disable Clock
Closed
1
Switch
Enable Clock
SW6
Disable Clock
Open
Closed
Switches 7 and 8 are not connected.
Clock Selection Switches (S9 and S10)
Switch S9 is used to control whether the clock input is driven from an
external or an on-board source. Switch S10 is used to apply power to the
board. The positions for these switches are labelled on the silk-screen.
Table 2–18 lists clock selection switch settings for board reference S9.
Table 2–18. Clock Selection Switch (S9)
Switch Setting
Result
Switch in OSC setting
Selects the 156.25-MHz oscillator
Switch in SMA position
Selects external clock input
2–24
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Altera Corporation
May 2006
Board Components & Interfaces
Power Supply
The power supply block distributes clean power to the Stratix II GX
device. You can either power-up using an on-board regulator or an
external power supply via banana jacks. However, if the Stratix II GX
device’s power consumption is above 4 W, you should use an external
power supply and a heat sink.
The board has two types of voltage regulators:
■
■
Switching regulators
Linear regulators
Switching regulators are used for digital circuits and linear regulators are
used for analog circuits. Table 2–19 lists board regulators’ specifications.
Table 2–19. Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board Regulators
Board
Reference
U12
U11
Type
Voltage
Output
Switching
regulator
16 V to 5 V
Dual output
switching
regulator
5 V to
3.3 V
Provides Power To
Manufacturer
Manufacturer Part
Number
USB UART
Regulators
Texas
Instruments
PTN78020W
Texas
Instruments
PTH05060W
●
VCCIO for FPGA
7-segment display
LEDs
Push buttons
EPCS64 device
●
●
●
●
●
●
U13
Dual output
switching
regulator
5 V to
1.2 V
●
VCCINT for FPGA
Texas
Instruments
PTH05060W
U14
Linear
regulator
5 V to
3.3 V
●
FPGA transceiver block
(VCCA pins)
Clock circuitry
Texas
Instruments
TPS78633KTTR
●
U15
Dual output
linear
regulator
3.3 V to
1.5 V/1.2 V
●
FPGA transceiver block
(VCCH pins)
National
Semiconductor
LP38842MR-ADJ
U16
Linear
regulator
3.3 V to
1.2 V
●
FPGA transceiver block
(VCCT, VCCR, and VCCL
pins)
National
Semiconductor
LP3883ES-1.2
Altera Corporation
May 2006
Reference Manual
2–25
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Power Supply
Figure 2–16 shows the board’s power supply block.
Figure 2–16. Power Supply Block Diagram
Wall AC/DC
Power Supply
16-V to 5-V
Switches
5-V to 1.2-V
Switches
VCCINT
5-V to 3.3-V
Linear
5-V to 3.3-V
Switches
3.3-V to
1.5-V Linear
3.3-V to
1.2-V Linear
VCCHTX
GXB
and EPLL
VCCIO
and IC
5-V Parts
Clock
and GXB
The decoupling analysis for this board is performed for a maximum
current consumption by the different power supplies, see Table 2–20.
Table 2–20. Power Supply Pins & Maximum Current Consumption
Power Supply
Net Name in
Schematic
Power Supply Pins Connected in
Stratix II GX Device
Maximum Expected
Current Consumption
1V2
VCCINT and VCCP
4.75 A
VCCTX
VCCH
290 mA
1V2A
VCCR and VCCT
1.70 A
3V3
VCCIO and external components 2.45 A
3V3A
VCCA and external components
2–26
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Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
1.04 A
Altera Corporation
May 2006
Board Components & Interfaces
Thermal
Management
Block
To ensure that the Stratix II GX device operates in the specified thermal
operating conditions, a thermal management unit is included on the
board. The on-chip temperature sensing diode needs to be monitored by
an external temperature sensor, which is the Maxim MAX1619 device
(U17). Accordingly, a SMBus interface in the PLD fabric of the
Stratix II GX device is required to monitor the thermal data, and
potentially, be an active participant with the active-cooling mechanism.
Figure 2–17 shows the on-board thermal management system diagram.
Figure 2–17. Stratix II GX Thermal Management System
Temperature
Sensing
Device
Stratix Device
Tempdiodep
Tempdioden
FET
The active-cooling device is similar to the Radian FB35+K52+T725 active
BGA cooler with clip.
f
Altera Corporation
May 2006
For more information, go to the Radian website at
http://www.radianheatsinks.com/products.html.
Reference Manual
2–27
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
FPGA Configuration Block
FPGA
Configuration
Block
To enable the highest configuration flexibility while maintaining the
lowest-cost and lowest-component usage, the on-board Stratix II GX
device can be configured in one of two ways:
●
●
JTAG configuration
Active serial configuration using an EPCS64 device
JTAG Configuration
The Stratix II GX device can be configured after power is applied to the
board. The JTAG interface permits the Quartus® II software to load the
Stratix II GX device with a user design through an Altera download
cable. The user design remains in the Stratix II GX device until power is
removed from the board.
1
The JTAG configuration scheme bonds the JTAG ports to a set of
header connections. This scheme allows direct device
configuration as well as support for the Altera SignalTap® II
embedded logic analyzer for debugging and logic probing.
Active Serial Configuration Using EPCS64 Device (U22)
The active serial configuration scheme uses a serial configuration device
(EPCS64), allowing the board to support the out-of-the-box experience.
The demo design and the Nios II embedded processor’s user code are
stored on the EPCS64 device and automatically configure the
Stratix II GX device upon power-up. If the load is not successful, the
CONF DONE LED (D14) does not illuminate and the Stratix II GX device
is not configured. If the load is successful, the CONF DONE LED
illuminates. See Figure 2–18.
2–28
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006
Board Components & Interfaces
Figure 2–18. Active Serial Configuration Scheme
VCC (1)
10 kΩ
VCC (1) VCC (1)
10 kΩ
10 kΩ
Stratix II GX Device
CONF_DONE
nSTATUS
N.C.
nCEO
nCONFIG
EPCS64 Device
nCE
MSEL[n..0]
n
(3)
10 kΩ
DATA
DATA0
DCLK
DCLK
nCS
nCSO
ASDI
ASDO
Pin 1
VCC (1)
GND
f
Altera Corporation
May 2006
For more information about Stratix II GX configuration, refer to the
Configuring Stratix II and Stratix II GX Devices chapter in volume 1 of the
Configuration Handbook.
Reference Manual
2–29
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Flash Memory
Flash Memory
To support the board’s out-of-the-box configuration option, flash
memory is available on the board. The flash memory also provides a
second option when storing non-volatile memory for the Nios II
processor’s user code. Therefore, the non-volatile memory can either be
stored in internal memory (after configuration with an EPCS64 device) or
in flash memory.
The on-board flash memory provides two main benefits:
■
■
Provides a second option when storing non-volatile memory
Useful when a smaller density, but migratable device, is used on the
board but does not have enough internal memory to support the
demo design.
To reduce the flash controller’s development cycle, a common flash
interface (CFI) flash memory is used. This provides device-specific
information to the system, allowing host software to easily reconfigure
for different flash devices. On this board, the CFI controller available in
the Quartus II SOPC Builder library is used, which reduces development
time when interfacing with flash memory.
The on-board flash memory is the Spansion LLC S29GL128N11TFI020,
which is a 128-Mbit memory module. The memory is available in either a
56-pin TSOP or a 64-pin FBGA. For simplicity and cost effectiveness, the
board uses the TSOP package.
2–30
Reference Manual
Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Altera Corporation
May 2006

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