Spartan-6 xc6slx16-2csg324 fpga, Configuration, I/o voltage rails – Xilinx SP601 Hardware UG518 User Manual

Page 13

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SP601 Hardware User Guide

www.xilinx.com

13

UG518 (v1.1) August 19, 2009

Detailed Description

1. Spartan-6 XC6SLX16-2CSG324 FPGA

A Xilinx Spartan-6 XC6SLX16-2CSG324 FPGA is installed on the Embedded Development
Board.

Configuration

The SP601 supports configuration in the following modes:

Master SPI x4

Master SPI x4 with off-board device

BPI

JTAG (using the included USB-A to Mini-B cable)

For details on configuring the FPGA, see

“Configuration Options.”

I/O Voltage Rails

There are four available banks on the LX16-CS324 device. Banks 0, 1, and 2 are connected
for 2.5V I/O. Bank 3 is used for the 1.8V DDR2 component memory interface of Spartan-6
FPGA’s hard memory controller. The voltage applied to the FPGA I/O banks used by the
SP601 board is summarized in

Table 1-2

.

9

VITA 57.1 FMC-LPC
connector

LVDS signals, clocks, PRSNT

6

10

LEDs

Ethernet PHY Status

7

11

LED, Header

FPGA Awake LED, Suspend Header

8

12

LEDs

FPGA INIT, DONE

9

13

LED

User I/O (active-High)

9

DIP Switch

User I/O (active-High)

9

Pushbutton

User I/O, CPU_RESET (active-High)

9

12-pin (8 I/O) Header

6 pins x 2 male header with 8 I/Os
(active-High)

10

14

Pushbutton

FPGA_PROG_B

9

15

USB JTAG

Cypress USB to JTAG download cable
logic

14, 15

16

Onboard Power

Power Management

11,12,13

Table 1-1:

SP601 Features (Cont’d)

Number

Feature

Notes

Schematic

Page

Table 1-2:

I/O Voltage Rail of FPGA Banks

FPGA Bank

I/O Voltage Rail

0

2.5V

1

2.5V

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