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
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers