Xilinx VC707, User Manual

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VC707 Evaluation Board www.xilinx.com 53
UG885 (v1.2) February 1, 2013
Feature Descriptions
FPGA_PROG_B Pushbutton SW9 (Active-Low)
[ Figure 1-2 , callout 28 ]
Switch SW9 grounds the FPGA's PROG_B pin when pressed. This action initiates an FPGA
reconfiguration. The FPGA_PROG_B signal is connected to FPGA U1 pin AJ11.
See UG470 , 7 Series FPGAs Configuration User Guide for further details on configuring the
7 series FPGAs.
Figure 1-31 shows SW9.
Configuration Mode and Upper Linear Flash Address Switch (SW11)
[ Figure 1-2 , callout 29 ]
FPGA Configuration Mode: DIP switch SW11 positions 3, 4, and 5 control which
configuration mode is used at power-up or when the PROG pushbutton is pressed.
Linear BPI Flash Upper Addresses: DIP switch SW11 positions 1 and 2 control the setting
of address bits FLASH_A25 and FLASH_A24. The mode signals FPGA_M2, _M1 and _M0
are connected to FPGA U1 pins AJ10, AK10 and AL10 respectively. Configuration mode is
used at power-up or when the PROG pushbutton is pressed.
X-Ref Target - Figure 1-31
Figure 1-31: FPGA_PROG_B Pushbutton SW9
UG885_c1_28_030512
VCC1V9
FPGA_PROG_B
R42
4.7k
Ω
0.1 W
5%
GND
1
2 3
4
SW9