pwren
Power on/off switch for card; once power is turned on, firmware should wait for regulator/switch ramp-up time before trying to initialize card.
| Module Instance | Base Address | Register Address |
|---|---|---|
| sdmmc | 0xFF704000 | 0xFF704004 |
Offset: 0x4
Access: RW
Important: To prevent indeterminate
system behavior, reserved areas of memory must not be accessed by software or
hardware. Any area of the memory map that is not explicitly defined as a register
space or accessible memory is considered reserved.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
|||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
power_enable RW 0x0 |
||||||||||||||
pwren Fields
| Bit | Name | Description | Access | Reset | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0 | power_enable | Power on/off switch for one card; for example, bit[0] controls the card. Once power is turned on, firmware should wait for regulator/switch ramp-up time before trying to initialize card.
|
RW | 0x0 |