Technical Reference Manual
002-29852 Rev. *B
26.8.22 CLK_SELECT
Description:
Clock selection register
Address:
0x40261500
Offset:
0x1500
Retention:
Retained
IsDeepSleep:
Yes
Comment:
Clock source selection register.
Default:
0x0
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
None [7:3]
LFCLK_SEL [2:0]
Bits
15
14
13
12
11
10
9
8
Name
PUMP
_ENABLE
[15:15]
PUMP_DIV [14:12]
PUMP_SEL [11:8]
Bits
23
22
21
20
19
18
17
16
Name
None [23:16]
Bits
31
30
29
28
27
26
25
24
Name
None [31:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0:2
LFCLK_SEL
RW
A
0
Select source for LFCLK. Note that not all products
support all clock sources. Selecting a clock source that
is not supported will result in undefined behavior.
Writes to this field are ignored unless the WDT is
unlocked using WDT_LOCK register. It takes four
cycles of the originally selected clock to switch away
from it. Do not disable the original clock during this
time.
ILO0
0
ILO0 - Internal Low-speed Oscillator #0.
WCO
1
WCO - Watch-Crystal Oscillator. Requires Backup
domain to be present and properly configured
(including external watch crystal, if used).
ALTLF
2
ALTLF - Alternate Low-Frequency Clock. Capability is
product-specific
PILO
3
PILO - Precision ILO. If present, it works in
DEEPSLEEP and higher modes. Does not work in
HIBERNATE mode.
ILO1
4
ILO1 - Internal Low-speed Oscillator #1, if present.
ECO_PRESCALER
5
ECO_PRESCALER - External-Crystal Oscillator after
prescaling, if present. Does not work in DEEPSLEEP
or HIBERNATE modes. Intended for applications that
operate in ACTIVE/SLEEP modes only. This option is
only valid when ECO is present in the product.
LPECO_PRESCALER
6
LPECO_PRESCALER - Low-Power External-Crystal
Oscillator after prescaling, if present. This choice
works in ACTIVE/SLEEP/DEEPSLEEP modes. This
option is only valid when LPECO is present in the
product.
8:11
PUMP_SEL
RW
R
0
Reserved. Not used the product.
12:14 PUMP_DIV
RW
R
0
Reserved. Not used in the product.
NO_DIV
0
N/A
DIV_BY_2
1
N/A
1660
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers