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some question about the MMC switching characteristics on datasheet.
#1. Why there are two JC645 on Figure 7-77? and the first one is MMC2_CLK rising edging to MMC2_CMD, but in the table, it is falling clock edge to CMD. which is right JC645?
#2. for transmit mode, the data and cmd are sent along with clock rising edge or falling edge? if it is falling edge, then JC645 should be the RED frame location, right?
#3. Same questions about JC646.
Tony,
1. The first JC645 referencing off of rising edge is incorrect. The second JC645 referencing off of falling edge is correct, as the table suggested.
2. Yes your understanding is correct, JC645 should fall in the red frame.
3. Same for JC646.
Have a great day and take care!
Best Regards,
Shiou Mei