User guide

AC701 Evaluation Board www.xilinx.com 53
UG952 (v1.1) January 30, 2013
Feature Descriptions
Figure 1-36 shows the simplified diagram of the power connector J49, power switch SW15
and indicator LED DS22.
The AC701 Evaluation Kit provides the adapter cable shown in Figure 1-37 for powering
the AC701 board from the ATX power supply 4-pin peripheral connector. The Xilinx part
number for this cable is 2600304, and is equivalent to Sourcegate Technologies part number
AZCBL-WH-1109-RA4.
FPGA_PROG_B Pushbutton SW9 (Active-Low)
[Figure 1-2, callout 27]
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 AE16.
See UG470, 7 Series FPGAs Configuration User Guide for further details on configuring
the 7 series FPGAs.
Figure 1-38 shows SW9.
X-Ref Target - Figure 1-36
Figure 1-36: Power On/Off Switch SW15
X-Ref Target - Figure 1-37
Figure 1-37: ATX Power Supply Adapter Cable
UG952_c1_33_101612
VCC12 P IN
VCC12 P
R369
1kΩ
1%
GND
1
2
3
4
SW15
C539
330μF
25V
GND
DS22
5
6
J49
1
2
3
4
5
6
12V
N/C
COM
12V
N/C
COM
GND
Power
PCIe
UG952_c1_34_101612
To ATX 4-Pin Peripheral
Power Connector
To J49 on AC701 Board
X-Ref Target - Figure 1-38
Figure 1-38: FPGA_PROG_B Pushbutton SW9
UG952_c1_35_100412
FPGA_3V3
FPGA_PROG_B
R42
4.7kΩ
0.1 W
5%
GND
1
2 3
4
SW9