Technical Reference Manual
002-29852 Rev. *B
26.8.33 CLK_FLL_CONFIG4
Description:
FLL Configuration Register 4
Address:
0x4026153C
Offset:
0x153C
Retention:
Retained
IsDeepSleep:
Yes
Comment:
This register contains frequency lock loop (FLL) configuration. Do not change settings while
the FLL is running.
Default:
0xFF
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
CCO_LIMIT [7:0]
Bits
15
14
13
12
11
10
9
8
Name
None [15:11]
CCO_RANGE [10:8]
Bits
23
22
21
20
19
18
17
16
Name
CCO_FREQ [23:16]
Bits
31
30
29
28
27
26
25
24
Name
CCO
_ENABLE
[31:31]
CCO_HW
_UPDATE
_DIS
[30:30]
None [29:25]
CCO
_FREQ
[24:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0:7
CCO_LIMIT
RW
R
255
Maximum CCO offset allowed (used to prevent FLL
dynamics from selecting an CCO frequency that the
logic cannot support)
8:10
CCO_RANGE
RW
R
0
Frequency range of CCO
RANGE0
0
Target frequency is in range [48, 64) MHz
RANGE1
1
Target frequency is in range [64, 85) MHz
RANGE2
2
Target frequency is in range [85, 113) MHz
RANGE3
3
Target frequency is in range [113, 150) MHz
RANGE4
4
Target frequency is in range [150, 200] MHz
16:24 CCO_FREQ
RW
RW
0
CCO frequency code. This is updated by HW when the
FLL is enabled. It can be manually updated to use the
CCO in an open loop configuration. The meaning of
each frequency code depends on the range.
30
CCO_HW_UPDATE_DIS
RW
R
0
Disable CCO frequency update by FLL hardware
0: Hardware update of CCO settings is allowed. Use
this setting for normal FLL operation.
1: Hardware update of CCO settings is disabled. Use
this setting for open-loop FLL operation.
31
CCO_ENABLE
RW
R
0
Enable the CCO. It is required to enable the CCO
before using the FLL.
0: Block is powered off
1: Block is powered on
1675
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers