User guide

DS1875
PON Triplexer and SFP Controller
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Table 01h, Register F8h: ALARM
3
POWER-ON VALUE 00h
READ ACCESS All
WRITE ACCESS PW1
MEMORY TYPE Volatile
F8h TEMP HI TEMP LO VCC HI VCC LO MON1 HI MON1 LO MON2 HI MON2 LO
BIT 7 BIT 0
Layout is identical to ALARM
3
in Lower Memory, Register 70h with two exceptions.
1. VCC LO alarm is not set at power-on.
2. These bits are latched. They are cleared by power-down or a write with PW1 access.
Table 01h, Register F9h: ALARM
2
POWER-ON VALUE 00h
READ ACCESS All
WRITE ACCESS PW1
MEMORY TYPE Volatile
F9h MON3 HI MON3 LO MON4 HI MON4 LO RESERVED RESERVED RESERVED RESERVED
BIT 7 BIT 0
Layout is identical to ALARM
2
in Lower Memory, Register 71h with one exception.
1. These bits are latched. They are cleared by power-down or a write with PW1 access.