Clock Enable Register
| CCLK_ENABLE | Clock-enable control for SD card clock. One MMC card clock supported. 0 - Clock disabled 1 - Clock enabled |
| RESERVED | Reserved |
| CCLK_LOW_POWER | Low-power control for SD card clock. One MMC card clock supported. 0 - Non-low-power mode 1 - Low-power mode; stop clock 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). |
| RESERVED | Reserved |