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SP605 Hardware User Guide www.xilinx.com 47
UG526 (v1.1.1) February 1, 2010
Detailed Description
FPGA_PROG_B Pushbutton SW3 (Active-Low)
The SW3 switch (Figure 1-21) grounds the FPGA PROG_B pin when pressed. This action
clears the FPGA. See the Spartan-6 FPGA data sheet for more information on clearing the
contents of the FPGA.
SYSACE_RESET_B Pushbutton SW9 (Active-Low)
When the System ACE CF configuration mode pin is high (enabled by closing DIP switch
S1 switch 4), the System ACE CF controller configures the FPGA from the CompactFlash
card when a card is inserted or the SYSACE RESET button is pressed. See “5. System ACE
CF and CompactFlash Connector,” page 20 for more details.
X-Ref Target - Figure 1-21
Figure 1-21: FPGA PROG_B Pushbutton SW3
VCC2V5
P2
P1
P3
P4
Pushbutton
1
2
R17
4.7K
1/16W
5%
2
1
3
4
SW3
FPGA_PROG_B
UG526_21 _092409
X-Ref Target - Figure 1-22
Figure 1-22: System ACE CF RESET_B Pushbutton SW9
P2
P1
P3
P4
Pushbutton
Silkscreen:
"SYSACE RESET"
2
1
3
4
SW9
SYSACE_RESET_B
20
UG526_22 _092409