DS1877T+T&R Maxim Integrated Products, DS1877T+T&R Datasheet - Page 36

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

Specifications of DS1877T+T&R

• 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+TRL

SFP Controller for Dual Rx Interface
Lower Memory, Register 6Fh: UPDATE
Lower Memory, Register 70h: ALARM
36
6Fh
70h
POWER-ON VALUE
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
TEMP RDY
BITS 5, 4,
POWER-ON VALUE
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
BITS 7,
TEMP HI
BITS 3:0
BIT 7
BIT 0
6, 3
2, 1
BIT 7
BIT 7
BIT 6
BIT 5
BIT 4
TEMP RDY, VCC RDY, RSSI RDY: Update of completed conversions. At power-on, these bits
are cleared and are set as each conversion is completed. These bits can be cleared so that a
completion of a new conversion is verified.
RESERVED
RSSIR: RSSI range. Reports the range used for conversion update of RSSI.
0 = Fine range is the reported value.
1 = Coarse range is the reported value.
TEMP HI: High alarm 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 alarm 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 alarm status for V
0 = (default) Last measurement was equal to or below threshold setting.
1 = Last measurement was above threshold setting.
VCC LO: Low alarm status for V
POA trip point value. It clears itself when a V
the low threshold.
0 = Last measurement was equal to or above threshold setting.
1 = (default) Last measurement was below threshold setting.
RESERVED
VCC RDY
TEMP LO
3
00h
All
All and device hardware
Different A2h and B2h memory locations
Volatile
RESERVED
10h
All
N/A
Different A2h and B2h memory locations
Volatile
VCC HI
RESERVED
VCC LO
CC
CC
measurement.
measurement. This bit is set when the V
RESERVED
RSSI RDY
CC
measurement is completed and the value is above
RESERVED
RESERVED
RESERVED
RESERVED
CC
supply is below the
RESERVED
RSSIR
BIT 0
BIT 0