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
VCC1V
8
CPU_RE
S
ET
P
us
h
bu
tton
1
1
2
4
2
S
W9
R1
88
4.7K
5%
1/16W
3
P1
P2
P3
P4
UG51
8
_25_070
8
09
