PLL Register Map
150
SBAU337 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Serial Interface Register Maps
2.2
PLL Register Map
Table 2-25. PLL Register Map
ADDRESS (Hex)
D7
D6
D5
D4
D3
D2
D1
D0
2Ah
reserved
reserved
CTL_CP_CONST_100U
CTL_REFCLK_BUF_CONST_300U
3Fh
CTL_PFD_DEL
reserved
reserved
reserved
reserved
reserved
40h
CTL_CP_CURR
reserved
reserved
reserved
reserved
41h
reserved
reserved
CTL_CP_BIAS
reserved
43h
CTL_LPF_R
reserved
reserved
reserved
5Ch
reserved
SYSREF_LATCH_DELAY
63h
CLR_FLAG_LO
CK_OUT
CLR_FLAG_LO
CK_LOST
reserved
reserved
reserved
66h
LOCK_LOST_ST
ICKY
LOCK_OUT_STI
CKY
LOCK
reserved
reserved
EN_LOCK_DET
ECT
EN_CAL
68h
VCO_SEL_RO
6Ah
reserved
LCMGEN_SYNC
_ENA
RST_LOCK_DE
TECT
6Ch
LCMGEN_DIV[7:0]
6Dh
LCMGEN_DIV[15:8]
6Eh
reserved
LCMGEN_SPI_S
YSREF
LCMGEN_USE_
SPI_SYSREF
6Fh
SYSREF_PULSE_CNT_TX
70h
SYSREF_PULSE_CNT_RX
71h
SYSREF_PULSE_CNT_FB
72h
SYSREF_PULSE_CNT_DIG
84h
CTL_LDOVCO_FBRES
CTL_LDOVCO_VREF
LDOVCO_FORC
E_OUTTOVDD
reserved
reserved
reserved
2.2.1 Register 2Ah (offset = 2Ah) [reset = 0h]
Figure 2-24. Register 2Ah
7
6
5
4
3
2
1
0
reserved
reserved
CTL_CP_CONST_100U
CTL_REFCLK_BUF_CONST_30
0U
R/W-0h
R/W-0h
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-26. Register 2A Field Descriptions
Bit
Field
Type
Reset
Description
7-6
reserved
R/W
0h
5-4
reserved
R/W
0h
3-2
CTL_CP_CONST_
100U
R/W
0h
scaling of currents.
00 -> scale = 1
01 -> scale = 0.8
10 -> scale = 1.4
11 -> scale = 1.2
1-0
CTL_REFCLK_BU
F_CONST_300U
R/W
0h
Refclock buffer bias current.
scaling of currents.
00 -> scale = 1
01 -> scale = 0.8
10 -> scale = 1.4
11 -> scale = 1.2