Based on SDIO spec v3.0 I have some doubts. a. SDIO 2.0 can support 7 function in one card. And these 7 functions all share
1 CLK , 1 CMD and 4 DAT lines ,right?
b. SDIO 3.0 have a new feature that is embedded SDIO.It's "shared bus" feature.
It used 7 CLK pin and 1 CMD and 4 DAT(8 is optional) lines for 7 functions,right?
c. I wonder what different it is? Just only increase clock pins for embedded SDIO or etc?
d. How do it work at choosing function between v2.0 and v3.0?Use CMD52 or Clock?
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