LM80_01 datasheet(22/29 Pages) NSC

Part #	LM80

Description	Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor

PDF	29 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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22 / 29 page

Functional Description (Continued)

12.0 REGISTERS AND RAM

12.1 Address Register

The main register is the ADDRESS Register. The bit designations are as follows:

Bit

Name

Read/

Write

Description

7-0

Address

Pointer

Read/Write

Address of RAM and Registers. See the tables below for detail.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Address Pointer (Power On default 00h)

12.2 Address Pointer Index (A7–A0)

Registers and RAM

A6–A0 in

Hex

Power On Value of Registers:

<7:0> in Binary

Configuration Register

00h

0000 1000

Interrupt Status Register 1

01h

0000 0000

Interrupt Status Register 2

02h

0000 0000

Interrupt Mask Register 1

03h

0000 0000

Interrupt Mask Register 2

04h

0000 0000

Fan Divisor/RST_OUT/OS

05h

0001 0100

Configuration/Temperature

Resolution Register

06h

0000 0001

Value RAM

20h–3Fh

LM80 Datasheet(PDF) 22 Page - National Semiconductor (TI)

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