ACS_BOOT_CFG
Bit Field |
Read/Write |
Field Name |
Description |
---|---|---|---|
8 |
RW |
PADS_RETENTION_EN |
Enable / Disable the retention mode of the pads |
6 |
RW |
BOOT_ROT_BYPASS |
Boot bypass execution of root of trust |
5 |
RW |
BOOT_PWR_CAL_BYPASS |
Boot bypass execution of system calibration |
4:3 |
R |
RC_CLOCK_FSEL |
RC oscillator clock multiplier read only flag (mirror of CLOCK_MULT of ACS_RCOSC_CTRL register) |
2 |
R |
RC_FTRIM_FLAG |
RC oscillator trimming read only flag (mirror of FTRIM_FLAG of ACS_RCOSC_CTRL register |
1:0 |
RW |
BOOT_SELECT |
Boot selection to indicate boot source |
Bit Field |
Field Name |
Value Symbol |
Value Description |
Hex Value |
---|---|---|---|---|
8 |
PADS_RETENTION_EN |
PADS_RETENTION_DISABLE |
Disable the pad retention mode |
0x0* |
|
|
PADS_RETENTION_ENABLE |
Enable the pad retention mode |
0x1 |
6 |
BOOT_ROT_BYPASS |
BOOT_ROT_BYPASS_DISABLE |
ROM will execute RoT |
0x0* |
|
|
BOOT_ROT_BYPASS_ENABLE |
ROM will not execute RoT |
0x1 |
5 |
BOOT_PWR_CAL_BYPASS |
BOOT_PWR_CAL_BYPASS_DISABLE |
ROM will execute calibration of system |
0x0* |
|
|
BOOT_PWR_CAL_BYPASS_ENABLE |
ROM will not execute calibration of system |
0x1 |
4:3 |
RC_CLOCK_FSEL |
RC_OSC_STATUS_3MHZ |
The RC Oscillator is at 3 MHz |
0x0* |
|
|
RC_OSC_STATUS_12MHZ |
The RC Oscillator is at 12 MHz |
0x1 |
|
|
RC_OSC_STATUS_24MHZ |
The RC Oscillator is at 24 MHz |
0x2 |
|
|
RC_OSC_STATUS_48MHZ |
The RC Oscillator is at 48 MHz |
0x3 |
2 |
RC_FTRIM_FLAG |
RC_OSC_STATUS_UNCALIBRATED |
The oscillators are not calibrated |
0x0* |
|
|
RC_OSC_STATUS_CALIBRATED |
The oscillators are calibrated |
0x1 |
1:0 |
BOOT_SELECT |
BOOT_FLASH_XTAL_DISABLE |
The CM33 executes code from the flash and the XTAL will not be started at boot |
0x0* |
|
|
BOOT_CUSTOM |
The CM33 executes code from the address specified in the wakeup information in retention RAM and the XTAL will not be started at boot |
0x1 |
|
|
BOOT_FLASH_XTAL_DEFAULT_TRIM |
The CM33 executes code from the flash and the XTAL will be started at boot with the default trim |
0x2 |
|
|
BOOT_FLASH_XTAL_CUSTOM_TRIM |
The CM33 executes code from the flash and the XTAL will be started at boot with trim from ACS_WAKEUP_GP_DATA |
0x3 |