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Page 166
IOWA-MARK Half-size CPU Card
B.1 DIO Interface Introduction
The DIO connector on the IOWA-MARK is interfaced to GIO ports on the Winbond
W83627EHG Super I/O chipset. The DIO has both 4-bit digital inputs and 4-bit digital
outputs. The digital inputs and digital outputs are generally control signals that control the
on/off circuit of external devices or TTL devices. Data can be read or written to the
selected address to enable the DIO functions.
NOTE:
For further information, please refer to the Winbond datasheet for the
Winbond W83627EHG Super I/O chipset.
B.2 DIO Connector Pinouts
The following table describes how the DIO connector pins are connected to the Super I/O
GPIO port 1.
Pin No Description Super I/O Pin Super I/O Pin Descripton
1 Ground N/A N/A
2 VCC N/A N/A
3 Output 0 GP14 General purpose I/O port 1 bit 4.
4 Output 1 GP15 General purpose I/O port 1 bit 5.
5 Output 2 GP16 General purpose I/O port 1 bit 6.
6 Output 3 GP17 General purpose I/O port 1 bit 7.
7 Input 0 GP10 General purpose I/O port 1 bit 0.
8 Input 1 GP11 General purpose I/O port 1 bit 1
9 Input 2 GP12 General purpose I/O port 1 bit 2
10 Input 3 GP13 General purpose I/O port 1 bit 3