Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
50 ______________________________________________________________________________________
Lower Memory, Register 74h: WARN
3
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 V
CC
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 V
CC
measurement. This bit is set when the V
CC
supply is below the POA
trip point value. It clears itself when a V
CC
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.