SDIO configuration register
| SDIO_ENABLE | Sdio clock enable |
| SDIO_IOREADY1 | sdio function1 io ready signal in cis |
| HIGHSPEED_ENABLE | Highspeed enable in cccr |
| HIGHSPEED_MODE | highspeed mode status in cccr |
| SDIO_CD_ENABLE | sdio card detect enable |
| SDIO_IOREADY2 | sdio function1 io ready signal in cis |
| SDIO_INT_MASK | mask sdio interrupt in cccr, high active |
| IOENABLE2 | ioe2 status in cccr |
| CD_DISABLE | card disable status in cccr |
| FUNC1_EPS | function1 eps status in fbr |
| EMP | empc status in cccr |
| IOENABLE1 | ioe1 status in cccr |
| SDIO_VER | sdio version in cccr |
| FUNC2_EPS | function2 eps status in fbr |
| SDIO20_CONF | [29],sdio negedge sample enablel.[30],sdio posedge sample enable.[31],sdio cmd/dat in delayed cycles control,0:no delay, 1:delay 1 cycle. [25]: sdio1.1 dat/cmd sending out edge control,1:negedge,0:posedge when highseed mode. [26]: sdio2.0 dat/cmd sending out edge control,1:negedge when [12]=0,0:negedge when [12]=0,posedge when highspeed mode enable. [27]: sdio interrupt sending out delay control,1:delay one cycle, 0: no delay. [28]: sdio data pad pull up enable |