DS1877T+T&R Maxim Integrated Products, DS1877T+T&R Datasheet - Page 49

• 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

Table 02h, Register 8Eh: RIGHT-SHIFT
Table 02h, Register 8Fh: RIGHT-SHIFT
Table 02h, Register 90h–91h: RESERVED
8Eh
8Fh
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
Allows for right-shifting the final answer of RSSI2 COARSE and RSSI2 FINE. This allows for scaling the measurement to
the smallest full-scale voltage and then right-shifting the final result so the reading is weighted to the correct LSB.
RESERVED
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
Allows for right-shifting the final answer of RSSI1 COARSE and RSSI1 FINE. This allows for scaling the measure-
ments to the smallest full-scale voltage and then right-shifting the final result so the reading is weighted to the cor-
rect LSB.
BIT 7
RESERVED
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
These registers are reserved.
BIT 7
RSSI2C
RSSI1C
SFP Controller for Dual Rx Interface
2
2
00h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
PW2 or (PW1 and RWTBL2)
Common A2h and B2h memory locations
Nonvolatile (SEE)
RSSI2C
00h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
PW2 or (PW1 and RWTBL2)
Common A2h and B2h memory locations
Nonvolatile (SEE)
1
2
RSSI1C
00h
N/A
N/A
N/A
N/A
(RSHIFT
(RSHIFT
1
1
RSSI2C
1
2
)
)
RSSI1C
0
0
RESERVED
RESERVED
RSSI2F
RSSI1F
2
2
RSSI2F
RSSI1F
1
1
RSSI2F
RSSI1F
BIT 0
BIT 0
0
0
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