ds1878 Maxim Integrated Products, Inc., ds1878 Datasheet - Page 46

• Manufacturer Part Number: ds1878
• Description: Sfp+ Controller With Digital Ldd Interface
• Manufacturer: Maxim Integrated Products, Inc.

SFP+ Controller with Digital LDD Interface
Lower Memory, Register 73h: ALARM
46
73h
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POWER-ON VALUE
READ ACCESS
WRITE ACCESS
MEMORY TYPE
BITS 5:4
BITS 2:0
LOS HI
BIT 7
BIT 7
BIT 6
BIT 3
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.
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.
RESERVED
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.
RESERVED
LOS LO
00h
All
N/A
Volatile
RESERVED
0
RESERVED
BIAS MAX
RESERVED
RESERVED
RESERVED
BIT 0