ONET1131EC Datasheet, PDF (35/46 Pages) Texas Instruments – Externally Modulated Laser Driver

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7.6.6 Adjustment Registers
7.6.6.1 Adjustment Registers 44-50
Figure 46. Adjustment Registers 44-50
7
6
5
4
3
2
Reserved
R
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 23. Adjustment Registers 44-50 Field Descriptions
Bit Field
7:0 Reserved
Type
R
Reset
0
Description
Reserved
7.6.6.2 Adjustment Register 51 (offset = 0100 0000) [reset = 40h]
Figure 47. Adjustment Register 51
7
6
5
4
3
SEL_RES_2 SEL_RES_1 SEL_RES_0
R
R
R
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
2
Reserved
R
Bit Field
7 SEL_RES_2
6 SEL_RES_1
5 SEL_RES_0
4:0 Reserved
Table 24. Adjustment Register 51 Field Descriptions
Type
R/W
R/W
Reset
0
1
R/W 0
R/W 0
Description
CDR Loop Filter Resistor
000: 75,
001: 150
010: 225
011: 300
100: 375
101: 450
110: 525
111: 600
Default = 225
Reserved
7.6.6.3 Adjustment Registers 52-55
Figure 48. Adjustment Registers 52-55
7
6
5
4
3
2
Reserved
R
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Bit Field
7:0 Reserved
Table 25. Adjustment Registers 52-55 Field Descriptions
Type
R
Reset
0
Description
Reserved
ONET1131EC
SLLSEQ6 – SEPTEMBER 2016
1
0
1
0
1
0
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