SD card spi protocol help!

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YangZ

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Hey everyone!

I would like to know for the sd card spi protocol, can i sample my data and shift my data both at the rising edge of SCK? I have research about spi protocol and i know that for SD card we can either use CPHA =1, CPOL=1 or CPOL=0 and CPHA =0. But i just wanted to know if its really possible to sample data and shift data at the rising edge of the SCK.

I thank you all for you time and advice on my problem.

Regards,
YangZ
 

yup you just read sd card simplified protocol spi mode it will tell you mostly all...
 

THanks guys for your help! Clarify all my doubts =]
 

By SD specification, you have to keep at least the required setup and hold times related to rising edge. Obviously, the specification
is based on a standard SPI mode 0/3 timing: Shift out on falling edge.
 

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