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44 www.xilinx.com SP605 Hardware User Guide
UG526 (v1.1.1) February 1, 2010
Chapter 1: SP605 Evaluation Board
User SIP Header
The SP605 includes a 6-pin single-inline (SIP) male pin header (J55) for FPGA GPIO access.
Four pins of J55 are wired to the FPGA through 200 ohm series resistors and a level shifter,
and the remaining two J55 pins are wired to 3.3V and GND. The J55 header is described in
Figure 1-18 and Table 1-26.
Note:
This header is not installed on the SP605 as built.
X-Ref Target - Figure 1-18
Figure 1-18: User SIP Header J55
VCC3V3
HDR_1x6
GPIO_HEADER_3
GPIO_HEADER_2
GPIO_HEADER_1
GPIO_HEADER_0
2
1
5%
1/16W
200
R281
1
2
R280
200
1/16W
5%
1
2
3
4
5
6
J55
DNP
1
2
R282
200
1/16W
5%
2
1
5%
1/16W
200
R283
TXB0108
VCCB
B1
B2
B3
B4
B6
B7
GND
A3
A8
OE
A4
A5
A7
A6
B5
A1
A2
B8
VCCA
VCC1V5_FPGA VCC3V3
GPIO_HEADER_0
GPIO_HEADER_1
GPIO_HEADER_2
GPIO_HEADER_3
GPIO_HEADER_0_LS
GPIO_HEADER_1_LS
NC
NC
NC
NC
2
12
3
1
15
7
8
6
5
10
9
4
11
13
14
16
17
18
20
19
U52
1
2
X5R
10V
0.1UF
C385
2
1
C384
0.1UF
10V
X5R
NC
NC
NC
NC
GPIO_HEADER_2_LS
GPIO_HEADER_3_LS
U1 FPGA Pin
G7
H6
D1
R7
UG526_18 _092409
Table 1-26: User SIP Header Connections
U1 FPGA Pin Schematic Net Name GPIO Header Pin
G7 GPIO_HEADER_0 J55.1
H6 GPIO_HEADER_1 J55.2
D1 GPIO_HEADER_2 J55.3
R7 GPIO_HEADER_3 J55.4
–GNDJ55.5
– VCC3V3 J55.6
Notes:
1. Each GPIO_HEADER_n signal is sourced from the FPGA as
<netname>_LS to a level shifter, then to the J55 header.
2. Each GPIO_HEADER_n net has a 200 ohm series resistor between
the level shifter and its respective header pin.