Datasheet

27Maxim Integrated
SFP Controller for Dual Rx Interface
DS1877
Table 02h Register Map
<C> or <_/C> = Common, <D> or <_/D> = Different, <M> or <_/M> = Mixture of common and different.
*The final result must be XORed with BB40h before writing to this register.
Table 04h Register Map
<C> or <_/C> = Common, <D> or <_/D> = Different, <M> or <_/M> = Mixture of common and different.
The access codes represent the factory default values of PW_ENA and PW_ENB (Table 02h, Registers C0h−C1h).
These registers also allow for custom permissions.
ACCESS
CODE
<0/_> <1/_> <2/_> <3/_> <4/_> <5/_> <6/_> <7/_> <8/_> <9/_> <10/_> <11/_>
Read
Access
See each
bit/byte
separately
All All All PW2 All N/A PW1 PW2 N/A PW2 All
Write
Access
PW2 N/A
All and
DS1877
hardware
PW2 +
mode
bit
All All PW1 PW2 PW2 N/A PW1
TABLE 02h (PW2)
ROW
(HEX)
ROW NAME
WORD 0 WORD 1 WORD 2 WORD 3
BYTE 0/8 BYTE 1/9 BYTE 2/A BYTE 3/B BYTE 4/C BYTE 5/D BYTE 6/E BYTE 7/F
80
<0/C>
CONFIG
0
<8/C>
MODE
<4/C>
TINDEX RESERVED RESERVED RESERVED RESERVED
<10>
DEVICE ID
<10>
DEVICE VER
88
<8/C>
CONFIG
1
CNFGA CNFGB CNFGC DEVICE ADDRESS RESERVED FORCE RSSI RSHIFT
2
RSHIFT
1
90
<8/C>
SCALE
0
RESERVED V
CC
SCALE XOVER2 COARSE XOVER2 FINE
98
<8/C>
SCALE
1
RSSI2 COARSE SCALE RSSI2 FINE SCALE RSSI1 COARSE SCALE RSSI1 FINE SCALE
A0
<8/C>
OFFSET
0
INTERNAL TEMP OFFSET* V
CC
OFFSET XOVER1 COARSE XOVER1 FINE
A8
<8/C>
OFFSET
1
RSSI2 COARSE OFFSET RSSI2 FINE OFFSET RSSI1 COARSE OFFSET RSSI1 FINE OFFSET
B0
<9/C>
PWD VALUE PW1 MSW PW1 LSW PW2 MSW PW2 LSW
B8
<8/C>
THRESHOLD
LOS RANGING
2
RESERVED HLOS2 LLOS2 LOS RANGING
1
RESERVED HLOS1 LLOS1
C0
<8/C>
PWD ENABLE PW_ENA PW_ENB RESERVED RESERVED RESERVED RESERVED POLARITY TBLSELPON
C8
<4/C>
DAC VALUES DAC2 VALUE RESERVED DAC1 VALUE RESERVED
D0–FF EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY
TABLE 04h (DAC LUT)
ROW
(HEX)
ROW NAME
WORD 0 WORD 1 WORD 2 WORD 3
BYTE 0/8 BYTE 1/9 BYTE 2/A BYTE 3/B BYTE 4/C BYTE 5/D BYTE 6/E BYTE 7/F
80–C7
<8/D>
LUT4 DAC LUT DAC LUT DAC LUT DAC LUT DAC LUT DAC LUT DAC LUT DAC LUT
C8–F7 EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY
F8–FF
<8/D>
DAC OFFSET
DAC OFFSET
LUT
DAC OFFSET
LUT
DAC OFFSET
LUT
DAC OFFSET
LUT
DAC OFFSET
LUT
DAC OFFSET
LUT
DAC OFFSET
LUT
DAC OFFSET
LUT