LM80 datasheet(12/35 Pages) TI1

Part #	LM80

Description	Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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12 / 35 page

LM80

SNIS102F – JUNE 1999 – REVISED MARCH 2013

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Internal Registers of the LM80

Table 1. The internal registers and their corresponding internal LM80 address is as follows:

LM80 Internal Hex

Power on Value

Notes

Address (This is the data

to be written to the

Address Register)

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

FAN1 and FAN2 divisor = 2 (count of 153 = 4400 RPM)

OS/ Configuration and

06h

0000 0001

Temperature Resolution

Value RAM

20h-3Fh

Serial Bus Interface

Serial Bus Timing

Figure 5. Serial Bus Write to the Internal Address Register followed by the Data Byte

Figure 6. Serial Bus Write to the Internal Address Register Only

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