ADS58J64 Datasheet, PDF (50/81 Pages) Texas Instruments – Quad-Channel, 14-Bit, 1-GSPS Telecom Receiver Device

ADS58J64
SBAS807 – JANUARY 2017
7.6.1.1.3.3 Register 71h (address = 71h) [reset = 0h], ANALOG Page
www.ti.com
Figure 93. Register 71h
7
6
5
4
3
2
1
0
EMP_LANE_B[5:4]
EMP_LANE_A
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; -n = value after reset
Table 26. Register 71h Field Descriptions
Bit Field
7-6 EMP_LANE_B[5:4]
5-0 EMP_LANE_A
Type
R/W
Reset
0h
R/W
0h
Description
De-emphasis for lane B.
These bits select the amount of de-emphasis for the JESD
output transmitter. The de-emphasis value in decibels (dB) is
measured as the ratio between the peak value after the signal
transition to the settled value of the voltage in one bit period.
0 : 0 dB
1 : –1 dB
3 : –2 dB
7 : –4.1 dB
15 : –6.2 dB
31 : –8.2 dB
63 : –11.5 dB
De-emphasis for lane A.
These bits select the amount of de-emphasis for the JESD
output transmitter. The de-emphasis value in dB is measured as
the ratio between the peak value after the signal transition to the
settled value of the voltage in one bit period.
0 : 0 dB
1 : –1 dB
3 : –2 dB
7 : –4.1 dB
15 : –6.2 dB
31 : –8.2 dB
63 : –11.5 dB
7.6.1.1.3.4 Register 72h (address = 72h) [reset = 0h], ANALOG Page
Figure 94. Register 72h
7
6
5
4
3
2
1
0
0
0
0
0
EMP_LANE_B[3:0]
R/W-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; -n = value after reset
Bit Field
7-4 0
3-0 EMP_LANE_B[3:0]
Table 27. Register 72h Field Descriptions
Type
R/W
R/W
Reset
0h
0h
Description
Must read or write 0
De-emphasis for lane B.
These bits select the amount of de-emphasis for the JESD
output transmitter. The de-emphasis value in dB is measured as
the ratio between the peak value after the signal transition to the
settled value of the voltage in one bit period.
0 : 0 dB
1 : –1 dB
3 : –2 dB
7 : –4.1 dB
15 : –6.2 dB
31 : –8.2 dB
63 : –11.5 dB
50
Submit Documentation Feedback
Product Folder Links: ADS58J64
Copyright © 2017, Texas Instruments Incorporated