22.3.1 GPBR Mode Register
This register is write-once. All bits are cleared at first power-up and on each loss of VBAT.
This register can only be written if the WPEN bit is cleared in the System Controller Write Protection Mode register (SYSC_WPMR).
Name: | GPBR_MR |
Offset: | 0x0 |
Reset: | 0x00000000 |
Property: | Read/Write-Once |
Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
Access | |||||||||
Reset |
Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
GPBRRP1 | GPBRRP0 | ||||||||
Access | R/W | R/W | |||||||
Reset | 0 | 0 |
Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
Access | |||||||||
Reset |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
GPBRWP1 | GPBRWP0 | ||||||||
Access | R/W | R/W | |||||||
Reset | 0 | 0 |
Bits 16, 17 – GPBRRPx GPBRx Read Protection
Value | Description |
---|---|
0 |
The content of the corresponding GPBR register (32-bit part-select) can be read. |
1 |
The corresponding GPBR register (32-bit part-select) always returns zero when read. |
Bits 0, 1 – GPBRWPx GPBRx Write Protection
Value | Description |
---|---|
0 |
The corresponding GPBR register (32-bit part-select) can be written. |
1 |
The corresponding GPBR register (32-bit part-select) is write-protected. |