Timing between CMD and Response in MMC protocol

Sep 24, 2005 0 Replies

Hi,



In MMC protocol, the timeperiod in between command and response is to 64 clock cycles. i.e. after receiving a command, the MMC card has t respond with in 64 clock cycles.



But the command is followed by a period of two Z bits (allowing time fo direction switching on the bus) and then by P bits pushed up by th responding card.



My question is, whether the responding card has to push up the bu immediately after the command followed by two z bits or it can take mor than two z bits to respond.



Please clarify me.



Thanks in advance.



regards, SAI KRISHNA.


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