DS1874 datasheet(45/88 Pages) MAXIM

45 / 88 page

SFP+ Controller with Digital LDD Interface

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Lower Memory, Register 74h: WARN3

POWER-ON VALUE

10h

READ ACCESS

All

WRITE ACCESS

N/A

MEMORY TYPE

Volatile

74h

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-warning 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-warning 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-warning 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-warning 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-warning 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-warning 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-warning 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-warning status for MON2 measurement.

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

1 = Last measurement was below threshold setting.

DS1874 Datasheet(PDF) 45 Page - Maxim Integrated Products

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