eMMC and CLK signal

[Jane]

Obe of the signals that eMMC require is CLK signal. THis signal is generated by CPU. Does anyone know the frequency ( and voltage value) of that CLK in mobile phones?
Thanks

[Manul]

I would say it should be 3.3v or 1.8v logic levels. In a mobile phone (if it is reasonably new) maybe 1.8v is more likely, because of power savings. Frequency can be anywhere from 10's to 100's of Mhz. More likely 100, 200. You need to measure, it is impossible to tell from what you provided.