Chapter 15: Expansion Connectors
J20 Header
The J20 header, shown in Figure 15-10 , is the top-most six-pin connector along the right
edge of the board. It uses a female six-pin 90° socket. Four FPGA pins connect to the J20
header, J20_IO<4:1>. The board supplies 3.3V to the accessory board mounted in the J20
socket on the bottom pin.
R
FPGA
(V14)
(V15)
(W16)
(V16)
J20_IO1
J20_IO2
J20_IO3
J20_IO4
J20
GND
3.3V
UG334_c15_10_052407
Figure 15-10: FPGA Connections to the J20 Accessory Header
Digilent Peripheral Modules
Digilent Peripheral Modules (PMODs) are small I/O interface boards that offer an ideal
way to extend the capabilities of programmable logic and embedded control boards. They
allow sensitive signal conditioning circuits and high-power drive circuits to be placed
where they are most effective - near sensors and actuators. PMODs communicate with
system boards using six-wire cables that can carry up to four digital control signals,
including SPI and other serial protocols. PMODs allow more effective design partitions by
routing analog signals and power supplies only where they are needed and away from
digital controller boards.
130
?
Digilent, Inc. Peripheral Modules
www.xilinx.com Spartan-3A/3AN FPGA Starter Kit Board User Guide
UG334 (v1.1) June 19, 2008
相关PDF资料
HW-V4-ML403-UNI-G-J EVALUATION PLATFORM VIRTEX-4
HW-V4-ML405-UNI-G-J EVALUATION PLATFORM VIRTEX-4
HW-V4-ML410-UNI-G-J EVALUATION PLATFORM VIRTEX-4
HW-V5-ML501-UNI-G EVALUATION PLATFORM VIRTEX-5
HW-V5-ML507-UNI-G EVAL PLATFORM V5 FXT
HW-V5-ML550-UNI-G EVALUATION PLATFORM VIRTEX-5
HW-V5-ML555-G BOARD EVAL FOR VIRTEX-5 ML555
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