Xilinx SP601 Hardware UG518 - Manual (Page 37)

SP601 Hardware User Guide www.xilinx.com 37
UG518 (v1.1) August 19, 2009
Detailed Description
User Pushbutton Switches
The SP601 provides five active high pushbutton switches: SW6, SW4, SW5, SW7 and SW9.
The five pushbuttons all have the same topology as the sample shown in
Figure 1-25 . Four
pushbuttons are assigned as GPIO, and the fifth is assigned as a CPU_RESET. Figure 1-25
and Table 1-19 describe the pushbutton switches.
X-Ref Target - Figure 1-25
Figure 1-25: User Pushbutton Switch (Typical)
Table 1-19: Pushbutton Switch Connections
FPGA U1 Pin Schematic Netname Switch Pin
P4 GPIO_BUTTON_0 SW6.2
F6 GPIO_BUTTON_1 SW4.2
E4 GPIO_BUTTON_2 SW5.2
F5 GPIO_BUTTON_3 SW7.2
N4 CPU_RESET SW9.2
VCC1V8
CPU_RESET
Pushbutton
1
1
2
4
2
SW9
R188
4.7K
5%
1/16W
3
P1
P2 P3
P4
UG518_25_070809