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This user guide describes the features and operation of the Virtex™-4 prototype platform
and describes how to configure chains of FPGAs and serial PROMs.
Guide Contents
This manual contains one chapter:
• “Virtex-4 LX/SX Prototype Platform”
Additional Resources
To find additional documentation, see the Xilinx website at:
http://www.xilinx.com/literature/index.htm.
Preface
Conventions
Typographical
To search the Answer Database of silicon, software, and IP questions and answers, or to
create a technical support WebCase, see the Xilinx website at:
http://www.xilinx.com/support.
This document uses the following conventions. An example illustrates each convention.
The following typographical conventions are used in this document:
ConventionMeaning or UseExample
Messages, prompts, and
Courier font
Courier bold
Helvetica bold
program files that the system
displays
Literal commands that you enter
in a syntactical statement
Commands that you select from
a menu
Keyboard shortcutsCtrl+C
speed grade: - 100
ngdbuilddesign_name
File → Open
Virtex-4 LX/SX Prototype Platformwww.xilinx.com5
UG078 (v1.2) May 24, 2006
Preface: About This Guide
Italic font
Square brackets [ ]
ConventionMeaning or UseExample
Variables in a syntax statement
for which you must supply
ngdbuild design_name
values
See the Development System
References to other manuals
Reference Guide for more
information.
If a wire is drawn so that it
Emphasis in text
overlaps the pin of a symbol, the
two nets are not connected.
An optional entry or parameter.
However, in bus specifications,
such as bus[7:0], they are
ngdbuild [option_name]
design_name
required.
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Braces { }
Vertical bar |
Vertical ellipsis
Horizontal ellipsis . . .
Online Document
The following conventions are used in this document:
ConventionMeaning or UseExample
Blue text
Red text
A list of items from which you
must choose one or more
Separates items in a list of
choices
lowpwr ={on|off}
lowpwr ={on|off}
IOB #1: Name = QOUT’
.
.
Repetitive material that has
been omitted
.
Repetitive material that has
been omitted
IOB #2: Name = CLKIN’
.
.
.
allow block block_name
loc1 loc2 ... locn;
See the section “Additional
Cross-reference link to a location
in the current document
Resources” for details.
Refer to “Title Formats” in
Chapter 1 for details.
Cross-reference link to a location
in another document
See Figure 2-5 in the Virtex-II
Handbook.
Blue, underlined text
6www.xilinx.comVirtex-4 LX/SX Prototype Platform
Hyperlink to a website (URL)
Go to http://www.xilinx.com
for the latest speed files.
♦These designs include the Verilog source code, user constraints files (*.ucf),
documentation in PDF, and a readme.txt file
•Bitstream files (*.bit) for each part type supported by the board (Bitstream synthesized
using Xilinx tools)
•Full schematics of the board in both PDF format and ViewDraw schematic format
•PC board layout in Pads PCB format
•Gerber files in *.pho and *.pdf for the PC board (There are many free or shareware
Gerber file viewers available on the Web for viewing and printing these files)
Introduction
The Virtex-4 prototype platform and demonstration boards allow designers to investigate
and experiment with the features of Virtex-4 series FPGAs. This user guide describes the
features and operation of the Virtex-4 prototype platform, including how to configure
chains of FPGAs and serial PROMs.
Note:
and are not intended for A/C characterization or high-speed I/O evaluation.
Virtex-4 LX/SX Prototype Platformwww.xilinx.com7
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Prototype platforms are intended strictly for evaluating the functionality of Virtex-4 features
Introduction
Features
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•Independent power supply jacks for VCCINT, VCCO, and VCCAUX
•Selectable VCCO-enable pins for each SelectIO™ bank
•Configuration port for use with Parallel Cable III and Parallel Cable IV cables
•32 clock inputs
♦4 differential clock pairs
♦4 LVTTL-type oscillator sockets
♦20 breakout clock pins
•Power indicator LEDs
•Onboard Platform Flash ISPROM (32 Mb) for configuration
•Onboard power supplies for the Platform Flash ISPROM
•JTAG port for reprogramming the XCF32P series reconfigurable ISPROM and the user
FPGA, also known as the device under test (DUT)
•Upstream and downstream System ACE™ connectors and configuration interface
connectors
•Onboard battery holder
•One low-voltage, 14-pin, DIP crystal oscillators
The kit contains headers that can be soldered to the breakout area, if desired. These headers
are useful with certain types of oscilloscope probes for either connecting function
generators or wiring pins to the prototype area.
The Virtex-4 prototype platform (the board) contains a DUT FPGA and one In-System
Programmable Configuration PROM (ISPROM). The ISPROM can hold up to 33,554,432
bits. The DUT can be configured either from the ISPROM or from the configuration ports
(Parallel Cable III/IV cable).
In addition to the ISPROM and the configuration ports, there are upstream connectors and
downstream connectors. The upstream connectors can be connected to configure the DUT
by using the System ACE configuration solution or by chaining another board. The
downstream connectors can be used to connect to another board in a chain for serial
configuration. A maximum of two boards can be chained together.
The Virtex-4 prototype platform board is shown in Figure 2. Each feature is detailed in the
numbered sections that follow.
6a6c
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4
10
1
11
13
3
2
9
19
12
1313
8
13
7
14
5
16
17
15
6b6d
Figure 2:Detailed Description of Virtex-4 LX/SX Prototype Platform Components
18
UG078_02_101904
1. Power Switch
The board has an onboard power supply and an ON|OFF power switch. When lit, a green
LED indicates power from the power brick connector or the 5V jack.
On Position
In the ON position, the power switch enables delivery of all power to the board by way of
voltage regulators situated on the backside of the board. These regulators feed off a 5V
external power brick or the 5V power supply jack.
The voltage regulators deliver fixed voltages. Maximum current range for each supply will
vary. Table 1, page 9 shows the maximum voltage and maximum current for each onboard
power supply. If the current exceeds maximum ratings, use the power jacks to supply
power to the DUT.
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Table 1:Voltage Ranges
LabelMaximum VoltageMaximum Current
VCCINT1.2V1A
VCCO3.3V2A
VCCAUX2.5V1.5A
VCC3.3V2A
VCC1V81.8V1A
AVCC2.5V25 mA
Off Position
In the OFF position, the power switch disables all modes of powering the DUT.
Power Enable Jumpers
For each power supply there are headers marked SUPPLY on one side and JACK on the
other side. Appropriate placements of jumpers on these headers enables delivery of all
power from either the onboard regulators or the three power supply jacks marked
VCCINT, VCCO, and VCCAUX.
Detailed Description
2. Power Supply Jacks
One method of delivering power to the DUT is by way of the power supply jacks. (Consult
the Xilinx data book, http://www.xilinx.com/partinfo/datasheet.htm
voltage rating for each device you are using.) The power supply jacks are:
•VCCINT
♦Supplies voltage to the V
•VCCO
♦Supplies I/O voltages to the DUT
♦Each bank can be powered from one of two sources (V
appropriate placement of jumpers on the header
•VCCAUX
♦Supplies voltage to the V
CCINT
CCAUX
of the DUT
DUT pins
CCO
, for the maximum
, V
CCINT
) by
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Detailed Description
3. Configuration Ports
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These headers can be used to connect a Parallel Cable III or Parallel Cable IV cable to the
board (see Table 2) and support all Virtex-4 device configuration modes. See Table 3 for
connecting the cables to the configuration ports and Figure 3 for setting up the JTAG chain
on the board.
Table 2:Serial Mode
Configuration Port HeaderParallel Cable III/IV Pins
VCC3VCC
GNDGND
CCLKCCLK
DONED/P
DINDIN
PROGPROG
INIT
Table 3:JTAG Mode
Configuration Port Header
Parallel Cable IV Connector
VCC3V3VCCVCC
GNDGNDGND
TMSTMSTMS
TDITDITDI
TDOTDOTDO
TCKTCKTCK
INIT
UP
DN
Parallel Cable III PinsParallel Cable IV Pins
INIT
TDI
PROM
TMS
TCK
TDO
TDO
TDI
TCK
TMS
TDO
TDI
DUT
TDO
UG078_03_082404
Figure 3:JTAG Chain Termination
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4. JTAG Chain
Jumper J17 provides the ability to have the Virtex-4 in the JTAG chain or remove it from the
JTAG chain.
Note:
The Virtex-4 device must not be in the socket when detecting the ISPROM in the chain.
5. JTAG Termination Jumper
The DUT TDO pin can be jumpered to the TDO TERM pin or the downstream TDO pin.
When another board is connected to the downstream System ACE connector or
downstream interface connector, jumper the DUT TDO pin to the downstream TDO pin
for serial chaining. The connection allows the DUT TDO pin to be connected to the next
device in the chain.
The TCK and TMS pins are parallel feedthrough connections from the upstream
System ACE interface connector to the downstream System ACE interface connector and
drive the TCK and TMS pins of the onboard PROM and the DUT.
Note:
The termination jumper must be in place on the last board in the chain to connect the TDO pin
of the final device to the TDO feedback chain.
Detailed Description
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Detailed Description
6a. Upstream System ACE Interface Connector
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The upstream System ACE interface connector, as shown in Figure 4, can be used to
configure the DUT. Any JTAG configuration stream can source this connector. For
example, a System ACE controller with a CompactFlash card can be used to generate very
large JTAG streams for configuring multiple Virtex-4 prototype platforms using the
downstream System ACE interface connector.
UPSTREAM_TDO
GND
UPSTREAM_TCK
GND
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
GND
GND
UPSTREAM_TDI
GND
UPSTREAM_TMS
NC
135791113151719
2468101214161820
VCC3_EN
VCC3_EN
VCC3_EN
VCC3_EN
GND
Figure 4:Upstream System ACE Interface Connector (20-Pin Female)
6b. Downstream System ACE Interface Connector
The downstream System ACE interface connector, as shown in Figure 5, is used to pass
configuration information to a DUT in a downstream prototype platform board from
sources such as a Parallel Cable III cable or an upstream System ACE interface connector.
GND
VCC_TMP
VCC_TMP
VCC_TMP
VCC_TMP
2468101214161820
UG078_04_051004
GND
VCC3_EN
VCC3_EN
VCC3_EN
VCC3_EN
VCC_TMP
GND
DOWNSTREAM_TCK
GND
DOWNSTREAM_TDO
135791113151719
NC
DOWNSTREAM_TMS
GND
DOWNSTREAM_TDI
GND
UG078_05_051004
Figure 5:Downstream System ACE Interface Connector (20-Pin Male)
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6c. Upstream Interface Connector
The upstream interface connector, as shown in Figure 6, is used to configure the DUT in
select map or slave-serial mode. This connector can be sourced by a downstream interface
connector of another prototype platform board.
The downstream interface connector, as shown in Figure 7, passes serial configuration
information to the DUT in the downstream prototype platform board.
The prototyping area accommodates 0.10-inch spaced ICs. The kit contains headers that
can be soldered to the breakout area, if desired. Power and ground buses are located at the
top and bottom edges, respectively, of the prototyping area.
8. VCCO-Enable Supply Jumpers
Virtex-4 series devices have 9 to 17 SelectIO banks, labeled 0 through 16, each with a
VCCO-enable supply jumper. The VCCO-enable supply jumpers can connect each bank to
one of the two onboard supplies, VCCINT or the VCCO supply. These jumpers must be
installed for the Virtex-4 device to function normally.
9. VBATT
An onboard battery holder is connected to the VBATT pin of the DUT. If an external power
supply is used, the associated jumper must be removed and instead use a 12 mm lithium
coin battery (3V).
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10. Oscillator Sockets
The board has four crystal oscillator sockets, all wired for standard LVTTL-type oscillators.
These sockets connect to the DUT clock pads as shown in Table 4 and Table 5. Onboard
termination resistors can be changed by the user. The oscillator sockets accept both halfand full-sized oscillators and are powered by the DUT VCCO power supply.
Table 4:Oscillator Socket Clock Pin Connections for SF363 and FF668
Detailed Description
SF363FF668
LabelClock Name
OSC
Socket
Top 1
OSC
Socket
Top 2
OSC
Socket
Bottom 1
OSC
Socket
Bottom 2
IO_L1N_GCLK_CC_LC_3A11IO_L1N_GCLK_CC_LC_3B14
IO_L1P_GCLK_CC_LC_3B12IO_L1P_GCLK_CC_LC_3B15
IO_L1P_GCLK_CC_LC_4W13IO_L1P_GCLK_CC_LC_4AF12
IO_L1N_GCLK_CC_LC_4W12IO_L1N_GCLK_CC_LC_4AE12
Pin
Number
Clock Name
Table 5:Oscillator Socket Clock Pin Connections for FF1148 and FF1513
FF1148FF1513
LabelClock Name
Pin
Number
Clock Name
OSC
Socket
IO_L1N_GCLK_CC_LC_3G18IO_L1N_GCLK_CC_LC_3N20
Top 1
Pin
Number
Pin
Number
OSC
Socket
IO_L1P_GCLK_CC_LC_3F18IO_L1P_GCLK_CC_LC_3P20
Top 2
OSC
Socket
IO_L1P_GCLK_CC_LC_4AF18IO_L1P_GCLK_CC_LC_4AH20
Bottom 1
OSC
Socket
IO_L1N_GCLK_CC_LC_4AE18IO_L1N_GCLK_CC_LC_4AH19
Bottom 2
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Detailed Description
11. Differential Clock Inputs
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In addition to the oscillator sockets, there are eight 50Ω SMA connectors that allow
connection to an external function generator. These connect to the DUT clock pads as
shown in Table 6 and Table 7. They can also be used as differential clock inputs. The
differential clock pairings (DIFFERENTIAL PAIRS) are as shown in the tables.
Table 6:SMA Clock Pin Connections for SF363 and FF668
SF363FF668
LabelClock Name
Pin
Number
Clock Name
NIO_L8N_GC_LC_3B7IO_L8N_GC_LC_3C12
PIO_L8P_GC_LC_3A7IO_L8P_GC_LC_3C13
NIO_L2N_GC_VRP_LC_3B9IO_L2N_GC_VRP_LC_3A11
PIO_L2P_GC_VRN_LC_3A10IO_L2P_GC_VRN_LC_3A12
NIO_L2N_GC_LC_4W5IO_L2N_GC_LC_4AB10
PIO_L2P_GC_LC_4Y5IO_L2P_GC_LC_4AC10
NIO_L8N_GC_CC_LC_4W8IO_L8N_GC_CC_LC_4AD11
PIO_L8P_GC_CC_LC_4W9IO_L8P_GC_CC_LC_4AD12
Table 7:SMA Clock Pin Connections for FF1148 and FF1513
FF1148FF1513
LabelClock Name
Pin
Number
Clock Name
NIO_L8N_GC_CC_LC_3G16IO_L8N_GC_CC_LC_3K21
PIO_L8P_GC_CC_LC_3G17IO_L8P_GC_CC_LC_3L21
Pin
Number
Pin
Number
NIO_L2N_GC_VRP_LC_3J17IO_L2N_GC_VRP_LC_3K19
PIO_L2P_GC_VRP_LC_3H17IO_L2P_GC_VRP_LC_3J19
NIO_L2N_GC_LC_4AF16IO_L2N_GC_LC_4AF18
PIO_L2P_GC_LC_4AG16IO_L2P_GC_LC_4AF19
NIO_L8N_GC_CC_LC_4AH17IO_L8N_GC_CC_LC_4AJ19
PIO_L8P_GC_CC_LC_4AJ17IO_L8P_GC_CC_LC_4AK19
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12. DUT Socket
The DUT socket contains the user FPGA, referred to as the device under test (DUT). The
DUT must be oriented using the P1 indicator on the board.
Detailed Description
Caution!
pin damage, always use the vacuum tool provided when inserting or removing the Virtex-4
device. When using BGA packages, do not apply pressure to the device while activating the
socket. Doing so can damage the socket and/or the device.
13. Pin Breakout
The pin breakout area is used to monitor or apply signals to each of the DUT pins. Headers
can be soldered to the breakout area to use with certain types of oscilloscope probes, for
either connecting function generators or wiring pins to the pin breakout area. Clocks in the
pin breakout area that connect to the DUT clock pads are shown in Table 8 and Table 9,
page 20.
Table 8:Breakout Clock Pin Connections for SF363 and FF668
LabelClock Name
Failure to insert the device to the proper orientation can damage the device. To avoid
SF363FF668
Pin
Number
IO_L4P_GC_LC_3B10IO_L4P_GC_LC_3B13
IO_L4N_GC_VREF_LC_3C10IO_L4N_GC_VREF_LC_3B12
IO_L5P_GC_LC_3B13IO_L5P_GC_LC_3A16
IO_L5N_GC_LC_3A13IO_L5N_GC_LC_3A15
IO_L6P_GC_LC_3A8IO_L6P_GC_LC_3A10
Clock Name
Pin
Number
IO_L6N_GC_LC_3B8IO_L6N_GC_LC_3B10
IO_L7P_GC_LC_3B14IO_L7P_GC_LC_3B17
IO_L7N_GC_LC_3A14IO_L7N_GC_LC_3A17
IO_L3P_GC_LC_3C11IO_L3P_GC_LC_3C14
IO_L3N_GC_LC_3B11IO_L3N_GC_LC_3C15
IO_L4P_GC_LC_4Y6IO_L4P_GC_LC_4AF11
IO_L4N_GC_VREF_LC_4W6IO_L4N_GC_VREF_LC_4AF10
Breakout Area
IO_L5P_GC_LC_4W11IO_L5P_GC_LC_4AE14
IO_L5N_GC_LC_4W10IO_L5N_GC_LC_4AE13
IO_L6P_GC_LC_4Y7IO_L6P_GC_LC_4AE10
IO_L6N_GC_LC_4W7IO_L6N_GC_LC_4AD10
IO_L7P_GC_VRN_LC_4Y10IO_L7P_GC_VRN_LC_4AD17
IO_L7N_GC_VRP_LC_4Y9IO_L7N_GC_VRP_LC_4AD16
IO_L3P_GC_CC_LC_4Y12IO_L3P_GC_CC_LC_4AB17
IO_L3N_GC_CC_LC_4Y11IO_L3N_GC_CC_LC_4AC17
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Detailed Description
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Table 9:Breakout Clock Pin Connections for FF1148 and FF1513
FF1148FF1513
LabelClock Name
IO_L4P_GC_LC_3E13IO_L4P_GC_LC_3J21
IO_L4N_GC_VREF_LC_3E17IO_L4N_GC_VREF_LC_3J20
IO_L5P_GC_LC_3K18IO_L5P_GC_LC_3M21
IO_L5N_GC_LC_3K17IO_L5N_GC_LC_3M20
IO_L6P_GC_LC_3E16IO_L6P_GC_LC_3L20
IO_L6N_GC_LC_3F16IO_L6N_GC_LC_3L19
IO_L7P_GC_LC_3K19IO_L7P_GC_LC_3P22
IO_L7N_GC_LC_3J19IO_L7N_GC_LC_3P21
IO_L3P_GC_LC_3H19IO_L3P_GC_LC_3N22
IO_L3N_GC_LC_3H18IO_L3N_GC_LC_3M22
IO_L4P_GC_LC_4AK18IO_L4P_GC_LC_4AG20
IO_L4N_GC_VREF_LC_4AK17IO_L4N_GC_VREF_LC_4AF20
Breakout Area
IO_L5P_GC_LC_4AG18IO_L5P_GC_LC_4AL20
IO_L5N_GC_LC_4AG17IO_L5N_GC_LC_4AL19
IO_L6P_GC_LC_4AE17IO_L6P_GC_LC_4AH18
Pin
Number
Clock Name
Pin
Number
IO_L6N_GC_LC_4AE16IO_L6N_GC_LC_4AG18
IO_L7P_GC_VRN_LC_4AJ19IO_L7P_GC_VRN_LC_4AL21
IO_L7N_GC_VRP_LC_4AK19IO_L7N_GC_VRP_LC_4AK21
IO_L3P_GC_CC_LC_4AH19IO_L3P_GC_CC_LC_4AJ21
IO_L3N_GC_CC_LC_4AH18IO_L3N_GC_CC_LC_4AJ20
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14. User LEDs (Active-High)
There are 16 active-high user LEDs on the board. Before configuration, the LEDs reflect the
status of the configuration mode pins. During configuration, the LEDs are in a highimpedance condition. After configuration, the LEDs are available to the user and reflect the
status of pins D0-D7 and D24-D31 (corresponding to LED 0- LED 15). The LED
assignments are shown in Table 10.
Table 10:LED Assignments and Corresponding I/O
LEDAfter ConfigurationSF363FF668FF1148FF1513
Detailed Description
Pin Number For Package Type
0
U9AD13G13B16
1V10AC13F13A16
2V11AC15J21R22
3U12AC16H22T23
4V8AA11H13G15
5V9AA12H14G16
6V12AD14M20N24
7V13AC14N20M25
Available as user LEDs
8D6D13K14H15
9E7D14J14J16
10E14F15D21D26
11D15F16E21E26
12F6F11L14L16
13E6F12L15K16
14E15F13N18F25
15F15F14N19F26
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Detailed Description
15. PROGRAM Switch
16. RESET Switch (Active-Low)
17. DONE LED
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The active-low PROGRAM switch, when pressed, grounds the program pin on the DUT.
The RESET switch connects to a standard I/O pin on the DUT, allowing the user, after
configuration, to reset the logic within the DUT. When pressed, this switch grounds the
pin.
Table 11 shows the INIT pin locations for the available DUT package types.
Table 11: User Hardware and Corresponding I/O Pins
Pin Number For Package Type
LabelSF363FF668FF1148FF1513
RESET R16W24AP21AH23
Note: Refer to the readme.txt file for implementation of this user pin.
The DONE LED indicates the status of the DONE pin on the DUT. This LED lights when
DONE is high or if power is applied to the board without a part in the socket.
18. INIT LED
The INIT LED lights during initialization.
19. Platform Flash ISPROM
A 32-Mb Platform Flash In-System Programmable Configuration PROM (ISPROM) is
provided on the board for configuration (see Table 12). Refer to Platform Flash ISPROM
(DS123) at http://direct.xilinx.com/bvdocs/publications/ds123.pdf
description.
Table 12:Platform Flash ISPROM Configuration
LabelDescription
J46Provides power to the ISPROM. These jumpers must be installed for proper
operation of the ISPROM.
J45Sets the design revision control for the ISPROM.
J43Enables or disables the ISPROM by placing the address counter in reset and
DATA output lines in high-impedance state.
J42Sets the ISPROM for serial or select map configuration.
for a detailed
J8Selects one of two modes of CCLK operation:
• ISPROM provides CCLK (PROM CLKOUT)
• FPGA provides CCLK (FPGA CCLK)
22www.xilinx.comVirtex-4 LX/SX Prototype Platform
UG078 (v1.2) May 24, 2006
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