Owner's manual

DS1874
SFP+ Controller with Digital LDD Interface
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Lower Memory, Register 71h: ALARM
2
POWER-ON VALUE 00h
READ ACCESS All
WRITE ACCESS N/A
MEMORY TYPE Volatile
71h MON3 HI MON3 LO MON4 HI MON4 LO RESERVED RESERVED RESERVED TXFINT
BIT 7 BIT 0
BIT 7
MON3 HI: High-alarm status for MON3 measurement. A TXD event does not clear this alarm.
0 = (Default) Last measurement was equal to or below threshold setting.
1 = Last measurement was above threshold setting.
BIT 6
MON3 LO: Low-alarm status for MON3 measurement. A TXD event does not clear this alarm.
0 = (Default) Last measurement was equal to or above threshold setting.
1 = Last measurement was below threshold setting.
BIT 5
MON4 HI: High-alarm status for MON4 measurement. A TXD event does not clear this alarm.
0 = (Default) Last measurement was equal to or below threshold setting.
1 = Last measurement was above threshold setting.
BIT 4
MON4 LO: Low-alarm status for MON4 measurement. A TXD event does not clear this alarm.
0 = (Default) Last measurement was equal to or above threshold setting.
1 = Last measurement was below threshold setting.
BITS 3:1 RESERVED
BIT 0
TXFINT: TXF Interrupt. This bit is the wire-ORed logic of all alarms and warnings wire-ANDed with their
corresponding enable bits in addition to nonmaskable alarms TXP HI, TXP LO, BIAS MAX, and HBAL. The
enable bits are found in Table 01h, Registers F0h–FFh.