NEXCOM nROK 500 - Manual (Page 39)

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Appendix A: GPI/O Programming Guide
Copyright © 2012 NEXCOM International Co., Ltd. All rights reserved nROK 500 User Manual
Appendix A: GPI/O Programming Guide
I/O Address Function
Pin Definition Pin Definition
1 +5V 2 GND
3 GPIO20(Pin84)Out0 4 GPIO24(Pin36)In0
5 GPIO21(Pin70)Out1 6 GPIO25(Pin34)In1
7 GPIO22(Pin66)Out2 8 GPIO26(Pin33)In2
9 GPIO23(Pin48)Out3 10 GPIO27(Pin32)In3
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: 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