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A300 Motherboard

B.1 GPIO Settings and Default Values

B.1.1 GPIO Settings

Two addresses (320h and 321h) on the LVC chipset are reserved to control the GPIO

connector.

 Port 320h stores the data that is inputted to or outputted from the specified pin

on the GPIO connector.

 Port 321h is the input/output setting register for each pin on the GPIO

connector. If a pin outputs data, the corresponding bit is set to “0.” If a pin

inputs data, the corresponding bit is set to “1.” The table below outlines the

status of each GPIO pin.

GPIO N Status Bit Number Corresponding GPIO pin

Bit N = 0 Bit N = 1

Bit 0 GPIO 0 Output Input

Bit 1 GPIO 1 Output Input

Bit 2 GPIO 2 Output Input

Bit 3 GPIO 3 Output Input

Bit 4 GPIO 4 Output Input

Bit 5 GPIO 5 Output Input

Bit 6 GPIO 6 Output Input

Bit 7 GPIO 7 Output Input

B.1.2 Default Settings

The default settings for all the bits (Bit 0 to Bit 7) for both Port 320h and Port 321h are 00h.

Bit Number Port 320h Port 321h

Bit 0 00h 00h

Bit 1 00h 00h

Bit 2 00h 00h

Bit 3 00h 00h

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ChrisHox 26 Apr 2024 | 19:01:50

Hello, im noob :)

Intel A300 Bedienungsanleitung Seite 171