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Six-Pin Accessory Headers
Six-Pin Accessory Headers
The six-pin accessory headers provide easy I/O interface expansion using the various
Digilent Peripheral Modules.
J18 Header
The J18 header, shown in Figure 15-8 , is located in the bottom right corner of the board,
along the right edge, adjacent to the BTN_EAST push button. It uses a female six-pin 90°
socket. Four FPGA pins connect to the J18 header, J18_IO<4:1>. The board supplies 3.3V to
the accessory board mounted in the J18 socket on the bottom pin.
FPGA
(AA21)
(AB21)
(AA19)
(AB19)
J18
J18_IO1
J18_IO2
J18_IO3
J18_IO4
GND
3.3V
UG334_c15_08_052407
Figure 15-8:
FPGA Connections to the J18 Accessory Header
J19 Header
The J19 header, shown in Figure 15-9 , is left unpopulated on the board. Four FPGA pins
connect to the J19 header, J19_IO<4:1>. The board supplies 3.3V to the accessory board
mounted in the J19 socket on the bottom pin.
FPGA
(Y18)
(W18)
(V17)
J19_IO1
J19_IO2
J19_IO3
J19
(W17) J19_IO4
GND
3.3V
These pins connect to unpopulated mounting holes.
UG334_c15_09_052407
Figure 15-9:
FPGA Connections to the J19 Accessory Header
UG334 (v1.1) June 19, 2008
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