Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
36 ______________________________________________________________________________________
Table 02h Register Map
TABLE 02h (PW2)
WORD 0 WORD 1 WORD 2 WORD 3
ROW
(HEX)
ROW
NAME
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>
CONFIG
0
<8>
MODE
<4>
TINDEX
<4>
MODULATION
REGISTER
<4>
DAC1 VALUE
<4>
DAC2 VALUE
88
<8>
CONFIG
1
SAMPLE
RATE
CNFGA CNFGB CNFGC
DEVICE
ADDRESS
RESERVED RSHIFT
1
RSHIFT
0
90
<8>
SCALE
0
XOVER COARSE V
CC
SCALE MON1 SCALE MON2 SCALE
98
<8>
SCALE
1
MON3 FINE SCALE MON4 SCALE MON3 COARSE SCALE RESERVED
A0
<8>
OFFSET
0
XOVER FINE V
CC
OFFSET MON1 OFFSET MON2 OFFSET
A8
<8>
OFFSET
1
MON3 FINE OFFSET MON4 OFFSET MON3 COARSE OFFSET
INTERNAL TEMP
OFFSET*
B0
<9>
PWD VALUE PW1 MSW PW1 LSW PW2 MSW PW2 LSW
B8
<8>
THRESHOLD
LOS
RANGING
COMP
RANGING
ISTEPH ISTEPL HTXP LTXP HLOS LLOS
C0
<8>
PWD
ENABLE
PW_ENA PW_ENB MODTI DAC1TI DAC2TI ISTEPTI LUTTC TBLSELPON
C8
<0>
APC
<4>
MAN BIAS
<4>
MAN_
CNTL
<10>
BIAS REGISTER
<4>
APC
DAC
<10>
DEVICE
ID
<10>
DEVICE
VER
D0
<8>
HBATH
LUT
HBATH HBATH HBATH HBATH HBATH HBATH HBATH HBATH
D8–E7 EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY
E8
<8>
3W
CONFIG
0
RXCTRL1 RXCTRL2 SETCML SETLOSL TXCTRL IMODMAX IBIASMAX SETPWCTRL
F0
<8>
3W
CONFIG
1
SETTXDE SETTXEQ SETLOSTIMER SETLOSH RXCTRL3 TXCTRL2 TXCTRL3 3WSET
F8
<0>
3W
CONFIG
2
<8>
3WCTRL
<8>
ADDRESS
<8>
WRITE
<10>
READ
<10>
TXSTAT1
<10>
TXSTAT2 RESERVED RESERVED
ACCESS
CODE
<0> <1> <2> <3> <4> <5> <6> <7> <8> <9> <10> <11>
Read
Access
All All All PW2 All N/A PW1 PW2 N/A PW2 All
Write
Access
See each
bit/byte
separately
PW2 N/A
All and
device
hardware
PW2 +
mode
bit
All All PW1 PW2 PW2 N/A PW1
* The final result must be XORed with BB40h before writing to this register.
* Do not write to this register.
The access codes represent the factory default values of PW_ENA and PW_ENB (Table 02h, Registers C0h–C1h).