DS1877T+ Maxim Integrated Products, DS1877T+ Datasheet - Page 38

• 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

SFP Controller for Dual Rx Interface
Lower Memory, Register 73h: ALARM
Lower Memory, Register 74h: WARN
38
74h
73h
POWER-ON VALUE
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
POWER-ON VALUE
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
TEMP HI
BITS 3:0
BITS 5:0
BIT 7
BIT 7
BIT 6
BIT 5
BIT 4
LOS HI
BIT 7
BIT 7
BIT 6
TEMP HI: High warning status for temperature measurement.
0 = (default) Last measurement was equal to or below threshold setting.
1 = Last measurement was above threshold setting.
TEMP LO: Low warning status for temperature measurement.
0 = (default) Last measurement was equal to or above threshold setting.
1 = Last measurement was below threshold setting.
VCC HI: High warning status for V
0 = (default) Last measurement was equal to or below threshold setting.
1 = Last measurement was above threshold setting.
VCC LO: Low warning status for V
POA trip-point value. It clears itself when a V
low threshold.
0 = Last measurement was equal to or above threshold setting.
1 = (default) Last measurement was below threshold setting.
RESERVED
TEMP LO
LOS HI: High alarm status for RSSI; fast comparison. A TXD event does not clear this alarm.
0 = (default) Last comparison was below threshold setting.
1 = Last comparison was above threshold setting.
LOS LO: Low alarm status for RSSI; fast comparison. A TXD event does not clear this alarm.
0 = (default) Last comparison was above threshold setting.
1 = Last comparison was below threshold setting.
RESERVED
LOS LO
10h
All
N/A
Different A2h and B2h memory locations
Volatile
VCC HI
3
RESERVED
0
00h
All
N/A
Different A2h and B2h memory locations
Volatile
VCC LO
RESERVED
CC
CC
measurement.
measurement. This bit is set when the V
RESERVED
CC
RESERVED
measurement is completed and the value is above the
RESERVED
RESERVED
RESERVED
RESERVED
CC
supply is below the
RESERVED
RESERVED
BIT 0
BIT 0