clkena
Controls external SD/MMC Clock Enable.
| Module Instance | Base Address | Register Address |
|---|---|---|
| sdmmc | 0xFF704000 | 0xFF704010 |
Offset: 0x10
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 |
cclk_low_power RW 0x0 |
||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
cclk_enable RW 0x0 |
||||||||||||||
clkena Fields
| Bit | Name | Description | Access | Reset | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 16 | cclk_low_power | In low-power mode, stop sdmmc_cclk_out when card in IDLE (should be normally set to only MMC and SD memory cards; for SDIO cards, if interrupts must be detected, clock should not be stopped).
|
RW | 0x0 | ||||||
| 0 | cclk_enable | Enables sdmmc_cclk_out.
|
RW | 0x0 |