Supply Controller Control Register
Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
KEY[7:0] | |||||||||
Access | W | W | W | W | W | W | W | W | |
Reset |
Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
Access | |||||||||
Reset |
Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
Access | |||||||||
Reset |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
XTALSEL | VROFF | ||||||||
Access | W | W | |||||||
Reset |
Voltage Regulator Off
Note: This bit is located in the VDDIO domain.
Value | Description |
---|---|
0 |
(NO_EFFECT): No effect. |
1 |
(STOP_VREG): If KEY is correct, VROFF asserts the vddcore_nreset and stops the voltage regulator. |
Crystal Oscillator Select
Note: This bit is located in the VDDIO domain.
Value | Description |
---|---|
0 |
(NO_EFFECT): No effect. |
1 |
(CRYSTAL_SEL): If KEY is correct, XTALSEL switches the slow clock on the 32.768 kHz crystal oscillator output. |
Password
Value | Name | Description |
---|---|---|
0xA5 | PASSWD | Writing any other value in this field aborts the write operation. |