LM80 National Semiconductor, LM80 Datasheet - Page 22

• Manufacturer Part Number: LM80
• Description: Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
• Manufacturer: National Semiconductor

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7-0
Bit
Functional Description
12.0 REGISTERS AND RAM
12.1 Address Register
The main register is the ADDRESS Register. The bit designations are as follows:
12.2 Address Pointer Index (A7–A0)
Bit 7
A7
Configuration Register
Interrupt Status Register 1
Interrupt Status Register 2
Interrupt Mask Register 1
Interrupt Mask Register 2
Fan Divisor/RST_OUT/OS
OS
Configuration/Temperature
Resolution Register
Value RAM
Address
Pointer
Registers and RAM
Name
Bit 6
A6
Read/Write
Read/
Write
Bit 5
A5
(Continued)
Address of RAM and Registers. See the tables below for detail.
Address Pointer (Power On default 00h)
A6–A0 in
20h–3Fh
Hex
00h
01h
02h
03h
04h
05h
06h
Bit 4
A4
22
Bit 3
A3
Description
Power On Value of Registers:
Bit 2
A2
<
7:0
0000 1000
0000 0000
0000 0000
0000 0000
0000 0000
0001 0100
0000 0001
>
in Binary
Bit 1
A1
Bit 0
A0