2 System Board - (SiS Chipset) (Part Number: D4051-63001)

Devices on the ISA Bus

Devices on the ISA Bus

Super I/O Chip (NS 87308 or NS 87307)

The basic input/output control functions are provided by the Super I/O chip, the NS 87308 or NS 87307. The Super I/O chip is contained within a 160-pin PQFP package. The chip provides the control for the following devices:

Logical

Functions

Device

 

 

 

0

Keyboard controller

 

 

1

Mouse controller

 

 

2

RTC and Advanced Power supply Controller (APC)

 

 

3

Floppy disk controller

 

 

4

Parallel port controller

 

 

5

UART2 & IR controller

 

 

6

UART1 controller

 

 

7

GPIO

 

 

8

Power management

 

 

The Super I/O chip incorporates one Plug and Play compatible chip, is 100% compatible with the ISA architecture, and provides:

•An integrated floppy drive controller.

•A keyboard controller.

•A mouse controller.

•A real-time clock (RTC).

•Two UART’s (serial ports ).

•An IEEE1284 parallel port.

•Three general purpose chip select signals

•General purpose I/O register set.

•An X-bus data buffer that connects the 8-bit X data bus to the ISA data bus.

•Non-Volatile Memory (NVM) support via the Chip Select 0 (CS0) signal that is powered by the VCCH.

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