Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
______________________________________________________________________________________ 49
POWER-ON VALUE 00h
READ ACCESS All
WRITE ACCESS N/A
MEMORY TYPE Volatile
73h LOS HI LOS LO RESERVED RESERVED BIAS MAX RESERVED RESERVED RESERVED
BIT 7 BIT 0
BIT 7
LOS HI: High-Alarm Status for MON3; Fast Comparison. A TXD event does not clear this alarm.
0 = (Default) At POR, this is the state if the last comparison was below the HLOS threshold setting. See
the description of the set condition to determine what causes LOS HI to be reset.
1 = Last comparison was above the HLOS threshold setting. LOS HI stays set until the time MON3 goes
below the LLOS level, or a POR to the device causes LOS HI to reset if it is below the HLOS threshold.
BIT 6
LOS LO: Low-Alarm Status for MON3; Fast Comparison. A TXD event does not clear this alarm.
0 = (Default) At POR, this is the state if the last comparison was above the LLOS threshold setting. See
the description of the set condition to determine what causes LOS LO to be reset.
1 = Last comparison was below the LLOS threshold setting. LOS LO stays set until the time MON3 goes
above the HLOS level, or a POR to the device causes LOS LO to reset if it is below the LLOS threshold.
BITS 5:4 RESERVED
BIT 3
BIAS MAX: Alarm status for maximum digital setting of BIAS. A TXD event clears this alarm.
0 = (Default) The value for BIAS is equal to or below the IBIASMAX register.
1 = Requested value for BIAS is greater than the IBIASMAX register.
BITS 2:0 RESERVED
Lower Memory, Register 73h: ALARM
0