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Appendix A: GPI/O Programming Guide
Appendix A: GPI/O Programming Guide
I/O Address Function
Digital I/O (Digital Input/Output) pins are provided for custom system design.
This appendix provides definitions and its default setting for the Digital I/O
pins in the nROK 500. The pin definition is shown in the following table:
Pin
Definition
1
+5V
3
GPIO20(Pin84)Out0
5
GPIO21(Pin70)Out1
7
GPIO22(Pin66)Out2
9
GPIO23(Pin48)Out3
Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved
Pin
Definition
2
GND
4
GPIO24(Pin36)In0
6
GPIO25(Pin34)In1
8
GPIO26(Pin33)In2
10
GPIO27(Pin32)In3
IO base address : 800h
Bit0 : GPO20
Bit1 : GPO21
Bit2 : GPO22
Bit3 : GPO23
Bit4 : GPI 24
Bit5 : GPI 25
Bit6 : GPI 26
Bit7 : GPI 27
1. Read/Write GPIO data by I/O port 801h
26
nROK 500 User Manual
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