IEI Technology Nova-lx, User Manual

Page: 205 / 225

NOVA-LX 5.25” Motherboard
Page 185
C.1 DIO Interface Introduction
The DIO connector on the NOVA-LX is interfaced to GIO ports on the Winbond 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 datasheet for the Winbond
Super I/O chipset.
C.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. Pin Signal Super I/O Pin No. Symbol Description
1 GND -- -- --
2 VCC -- -- --
3 Output 0 124 GP14 GPIO Port 1 Bit 4
4 Output 1 123 GP15 GPIO Port 1 Bit 5
5 Output 2 122 GP16 GPIO Port 1 Bit 6
6 Output 3 121 GP17 GPIO Port 1 Bit 7
7 Input 0 125 GP13 GPIO Port 1 Bit 3
8 Input 1 126 GP12 GPIO Port 1 Bit 2
9 Input 2 127 GP11 GPIO Port 1 Bit 1
10 Input 3 128 GP10 GPIO Port 1 Bit 0