Digilent Nexys Board - Manual (Page 7)

Digilent
Nexys Reference Manual
www.digilentinc.com
Copyright Digilent, Inc. Page 7/10 Doc: 502-107
Spartan 3
FPGA
GND
VDD
P16
P15
T7
R5
N15
J16
K16
K15
L15
M16
M15
N16
R6
R7
1
16-pin
header
2
3
4
5
6
J8
16
15
14
13
12
11
10
9
7
8
USB Port
The Nexys contains an integral USB2
circuit based on a Cypress CY7C68013
USB controller. The USB port can be used
to program the on-board Xilinx devices, to
perform user-data transfers at up to
37Mbytes/sec, and to provide power to
the board. Programming is accomplished
with Digilent’s free Adept Suite Software.
The power source for the board is
determined by shorting the appropriate
pins at J4. Programming files are
generated with a number of software
packages (Digilent recommends the free
ISE WebPack from Xilinx). Once the
programming files are generated
programming the board is accomplished
via the Export function included in the
Adept Suite download.
The USB port on the Nexys board can
also accommodate data transfer with the
PC. The Adept Suite provides a software
interface to assist the user with this
function as well. The USB circuit on the
Nexys allows great flexibility when using
the board.
6-pin header connectors
The Nexys board provides four 6-pin
peripheral module connectors. Each
connector provides Vdd, GND, and four
unique FPGA signals. All four 6-pin
header circuits have short circuit
protection resistors and ESD protection
Diodes.
Several 6-pin module boards that can
attach to this connector are available
from Digilent, including speaker boards,
H-bridge boards, sensor boards, etc.
Please see
www.digilentinc.com for
more information.
16-pin header connectors
The Nexys board provides a 16-pin
header connector for use with several