User guide

DS1875
PON Triplexer and SFP Controller
36 ______________________________________________________________________________________
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>
MOD DAC
<4>
APC DAC
<4>
VINDEX
<4>
M4DAC
<10>
DEVICE
ID
<10>
DEVICE
VER
88
<8>
CONFIG
1
SAMPLE
RATE
CONFIG RESERVED
MOD
RANGING
DEVICE
ADDRESS
COMP
RANGING
RSHIFT
1
RSHIFT
0
90
<8>
SCALE
0
RESERVED V
CC
SCALE MON1 SCALE MON2 SCALE
98
<8>
SCALE
1
MON3 FINE SCALE MON4 SCALE MON3 COARSE SCALE RESERVED
A0
<8>
OFFSET
0
RESERVED 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>
INTERRUPT
FETG
ENABLE
1
FETG
ENABLE
0
TX-F
ENABLE
1
TX-F
ENABLE
0
HTXP LTXP HBIAS MAX BIAS
C0
<8>
CNTL OUT DPU RESERVED RESERVED M3QT DAC DAC1 RESERVED RESERVED
M4 LUT
CNTL
C8
<8>
SCALE
2
MON5 SCALE MON6 SCALE MON7 SCALE MON8 SCALE
D0
<8>
OFFSET
1
MON5 OFFSET MON6 OFFSET MON7 OFFSET MON8 OFFSET
D8–F7 EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY
F8
<0>
MAN BIAS
<4>
MAN
BIAS
1
<4>
MAN
BIAS
0
<4>
MAN_
CNTL
<10>
BIAS
DAC
1
<10>
BIAS
DAC
0
BIAS OL PWM DAC RESERVED
Table 02h Register Map
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
DS1875
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.