SDIO DLL clock control register.
| DLL_CCLK_IN_SLF_EN | Clock enable of cclk_in_slf when ULTRA_HIGH_SPEED_MODE==1. |
| DLL_CCLK_IN_DRV_EN | Clock enable of cclk_in_drv when ULTRA_HIGH_SPEED_MODE==1. |
| DLL_CCLK_IN_SAM_EN | Clock enable of cclk_in_sam when ULTRA_HIGH_SPEED_MODE==1. |
| DLL_CCLK_IN_SLF_PHASE | It’s used to control the phase of cclk_in_slf when ULTRA_HIGH_SPEED_MODE==1. |
| DLL_CCLK_IN_DRV_PHASE | It’s used to control the phase of cclk_in_drv when ULTRA_HIGH_SPEED_MODE==1. |
| DLL_CCLK_IN_SAM_PHASE | It’s used to control the phase of cclk_in_sam when ULTRA_HIGH_SPEED_MODE==1. |