DS1876 datasheet(36/69 Pages) MAXIM

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SFP Controller with Dual LDD Interface

Lower Memory, Register 70h: ALARM3

POWER-ON VALUE

10h

READ ACCESS

All

WRITE ACCESS

N/A

A2h AND B2h MEMORY

Different A2h and B2h memory locations

MEMORY TYPE

Volatile

70h

TEMP HI

TEMP LO

VCC HI

VCC LO

BMON HI

BMON LO

PMON HI

PMON LO

BIT 7

BIT 0

BIT 7

TEMP HI: High alarm status for temperature measurement.

0 = (default) Last measurement was equal to or below threshold setting.

1 = Last measurement was above threshold setting.

BIT 6

TEMP LO: Low alarm status for temperature measurement.

0 = (default) Last measurement was equal to or above threshold setting.

1 = Last measurement was below threshold setting.

BIT 5

VCC HI: High alarm status for VCC measurement.

0 = (default) Last measurement was equal to or below threshold setting.

1 = Last measurement was above threshold setting.

BIT 4

VCC LO: Low alarm status for VCC measurement. This bit is set when the VCC supply is below

the POA trip point value. It clears itself when a VCC measurement is completed and the value is

above the low threshold.

0 = Last measurement was equal to or above threshold setting.

1 = (default) Last measurement was below threshold setting.

BIT 3

BMON HI: High alarm status for BMON measurement.

0 = (default) Last measurement was equal to or below threshold setting.

1 = Last measurement was above threshold setting.

BIT 2

BMON LO: Low alarm status for BMON measurement.

0 = (default) Last measurement was equal to or above threshold setting.

1 = Last measurement was below threshold setting.

BIT 1

PMON HI: High alarm status for PMON measurement.

0 = (default) Last measurement was equal to or below threshold setting.

1 = Last measurement was above threshold setting.

BIT 0

PMON LO: Low alarm status for PMON measurement.

0 = (default) Last measurement was equal to or above threshold setting.

1 = Last measurement was below threshold setting.

DS1876 Datasheet(PDF) 36 Page - Maxim Integrated Products

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