DS1875 datasheet(49/92 Pages) MAXIM

49 / 92 page

POWER-ON VALUE

10h

READ ACCESS

All

WRITE ACCESS

N/A

MEMORY TYPE

Volatile

70h

TEMP HI

TEMP LO

VCC HI

VCC LO

MON1 HI

MON1 LO

MON2 HI

MON2 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

MON1 HI: High alarm status for MON1 measurement.

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

1 = Last measurement was above threshold setting.

BIT 2

MON1 LO: Low alarm status for MON1 measurement.

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

1 = Last measurement was below threshold setting.

BIT 1

MON2 HI: High alarm status for MON2 measurement.

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

1 = Last measurement was above threshold setting.

BIT 0

MON2 LO: Low alarm status for MON2 measurement.

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

1 = Last measurement was below threshold setting.

Lower Memory, Register 70h: ALARM3

PON Triplexer and SFP Controller

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DS1875 Datasheet(PDF) 49 Page - Maxim Integrated Products

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