PLL Register Map
152
SBAU337 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Serial Interface Register Maps
Table 2-29. Register 41 Field Descriptions
Bit
Field
Type
Reset
Description
7-4
reserved
R/W
0h
3-3
reserved
R/W
0h
2-1
CTL_CP_BIAS
R/W
0h
Scaling factor for Charge pump current.
0 -> 1x
1 -> 0.5x
2 -> 2x
3 -> 1.5x
0-0
reserved
R/W
0h
2.2.5 Register 43h (offset = 43h) [reset = 18h]
Figure 2-28. Register 43h
7
6
5
4
3
2
1
0
CTL_LPF_R
reserved
reserved
reserved
R/W-0h
R/W-1h
R/W-1h
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-30. Register 43 Field Descriptions
Bit
Field
Type
Reset
Description
7-5
CTL_LPF_R
R/W
0h
lpf res is given by
R = 638+638/4*CTL_LPF_R<2:0>
4-4
reserved
R/W
1h
3-3
reserved
R/W
1h
2-0
reserved
R/W
0h
2.2.6 Register 5Ch (offset = 5Ch) [reset = 0h]
Figure 2-29. Register 5Ch
7
6
5
4
3
2
1
0
reserved
SYSREF_LATCH_DELAY
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-31. Register 5C Field Descriptions
Bit
Field
Type
Reset
Description
7-3
reserved
R/W
0h
2-0
SYSREF_LATCH_
DELAY
R/W
0h
CLK delay for sysref latching
0 : 0p
1 : 20p
2 : T/2+20p
3 : 40p
4 : T/2+40p
5 : 60p
6 : T/2+60p
7 : 80p
Where T is the time period of the clock