8.5.2.6.2 Registers 13h-15h (address = 13h-15h), JESD Analog Page (6A00h)
Figure 127. Register 13h
7
6
5
4
3
2
1
0
SEL EMP LANE 0
0
0
R/W-0h
W-0h
W-0h
Figure 128. Register 14h
7
6
5
4
3
2
1
0
SEL EMP LANE 2
0
0
R/W-0h
W-0h
W-0h
Figure 129. Register 15h
7
6
5
4
3
2
1
0
SEL EMP LANE 3
0
0
R/W-0h
W-0h
W-0h
Table 64. Register 13h-15h Field Descriptions
Bit
Field
Type
Reset
Description
7-2
SEL EMP LANE x (where x = 0, 2, or 3)
R/W
0h
Selects 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.
000000 = 0 dB 000001 = –1 dB 000011 = –2 dB
000111 = –4.1 dB
001111 = –6.2 dB
011111 = –8.2 dB
111111 = –11.5 dB