DS1877T+ Maxim Integrated Products, DS1877T+ Datasheet - Page 37

• Manufacturer Part Number: DS1877T+
• Description: IC CTLR/MON SFP 1-2CH 28TQFN
• Manufacturer: Maxim Integrated Products
• Type: SFP+ Controllerr

Specifications of DS1877T+

• Input Type: Logic
• Output Type: Logic
• Interface: I²C
• Current - Supply: 2.5mA
• Mounting Type: Surface Mount
• Package / Case: 28-WFQFN exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-1877T+000

Lower Memory, Register 71h: ALARM
Lower Memory, Register 72h: RESERVED
71h
POWER-ON VALUE
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
This register is reserved.
POWER-ON VALUE
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
BITS 5:1
RSSI HI
BIT 7
BIT 7
BIT 6
BIT 0
RSSI HI: High alarm status for RSSI measurement. A TXD event does not clear this alarm.
0 = (default) Last measurement was equal to or below the threshold setting.
1 = Last measurement was above the threshold setting.
RSSI LO: Low alarm status for RSSI measurement. A TXD event does not clear this alarm.
0 = (default) Last measurement was equal to or above the threshold setting.
1 = Last measurement was below the threshold setting.
RESERVED
FLTINT: FAULT interrupt. This bit is the wire-ORed logic of all alarms and warnings wire-ANDed with
their corresponding enable bits. The enable bits are found in Table 01h/05h, Registers F8h–FFh.
RSSI LO
SFP Controller for Dual Rx Interface
00h
N/A
N/A
N/A
N/A
RESERVED
2
00h
All
N/A
Mixed A2h and B2h memory locations
Volatile
RESERVED
RESERVED
RESERVED
RESERVED
FLTINT
BIT 0
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