User Manual
DS1862
XFP Laser Control and Digital Diagnostic IC
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TABLE 04H (CONTROL AND CONFIG) (80H–BBH)
WORD 0 WORD 1 WORD 2 WORD 3
ADDRESS
(hex)
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
<4>
Reserved
Bias shift,
TX-P shift
RX-P shift
AUX1 shift
AUX2 shift
Reserved
APC
course setting
APC
fine setting
LUT current
range
Control
Register 1
88
<4>
Quick trip TX-P
high
Quick trip
TX-P low
QT high bias
setting
Control
Register 2
Reserved Reserved Reserved Reserved
90
<4>
Reserved Reserved
Scale MSB
V
CC3
Scale LSB
V
CC3
Scale MSB
BIAS
Scale
LSB BIAS
Scale
MSB TX-P
Scale
LSB TX-P
98
<4>
Scale MSB RX-P
Scale
LSB RX-P
Scale
MSB AUX1
Scale
LSB AUX1
Scale
MSB AUX2
Scale LSB
AUX2
Reserved Reserved
A0
<4>
Offset MSB temp
Offset
LSB temp
Offset MSB
V
CC3
Offset
LSB V
CC3
Offset
MSB Bias
Offset LSB
BIAS
Offset MSB
TX-P
Offset
LSB TX-P
A8
<4>
Offset MSB RX-P
Offset
LSB RX-P
Offset MSB
AUX1
Offset
LSB AUX1
Offset MSB
AUX2
Offset LSB
AUX2
Reserved Reserved
B0
<4>
LUT INDEX
pointer
LUT value LUT_conf Reserved
DAC status
Reserved Reserved Reserved
B8
<4>
Module PWD
setting
Module PWD
setting
Module PWD
setting
Module PWD
setting
EXPANDED BYTES
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
BYTE
(hex)
BYTE
WORD
NAME
bit
15
bit
14
bit
13
bit
12
bit
11
bit
10
bit
9
bit
8
bit
7
bit
6
bit
5
bit
4
bit
3
bit
2
bit
1
bit
0
81
<4>
Bias shift 2
3
Bias shift 2
2
Bias shift 2
1
Bias shift 2
0
TX-P shift 2
3
TX-P shift 2
2
TX-P shift 2
1
TX-P shift 2
0
82
<4>
RX-P shift
2
3
Rx-P shift
2
2
Rx-P shift
2
1
Rx-P shift
2
0
AUX1 shift
2
3
AUX1 shift
2
2
AUX1 shift
2
1
AUX1 shift
2
0
83
<4>
AUX2 shift
2
3
AUX2 shift
2
2
AUX2 shift
2
1
AUX2 shift
2
0
Reserved Reserved
Reserved
Reserved
84
<4>
APC 2
9
APC 2
8
APC 2
7
APC 2
6
APC 2
5
APC 2
4
APC 2
3
APC 2
2
85
<4>
Reserved Reserved
Reserved Reserved Reserved Reserved APC 2
1
APC 2
0
86
<4>
Reserved Reserved
Reserved Reserved Reserved
LUT range 2
2
LUT range 2
1
LUT range 2
0
87
<4>
FET_POL
QT TX-P HI
mask
QT BIAS HI
mask
QT TX-P LO
mask
Reserved Reserved
scr_sink_b
Reserved
8B
<4>
Reserved Reserved
Reserved-
enable
TEMP_int-ext Reserved
EN Value 2
1
EN Value 2
0
EN1/2 MUX
B2
LU T_C
ON F
< 4>
Reserved Reserved
Reserved Reserved Reserved SEEB TEN AEN
B4
<4>
Safety flag Shutdown
Reserved
QT TX-P LO
FLAG
QT TX-P HI
FLAG
QT BIAS HI
FLAG
Reserved
Reserved
B8
Module
PW
<7>
2
31
2
30
2
29
2
28
2
27
2
26
2
25
2
24
B9
Module
PW
<7>
2
23
2
22
2
21
2
20
2
19
2
18
2
17
2
16
BA
Module
PW
<7>
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
BB
Module
PW
<7>
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0