Hello everyone, I'm trying to interface an MCU (not a PIC) to an SD card. I've been trying to locate some timing diagrams on what say a CMD0 and CMD1 going to the SD Card look like. I've found LOTS of code, but much of it contradicts other code (and of course none is for the MCU I'm using so it's of limited use). I've been referencing the sandisk PDF but it doesn't give any waveforms on what things have to look like (i.e. the host samples on this edge of the clock, the card samples on this edge, there are this many clock cycles between the CMD token and the response token, etc). I was wondering if anyone here has a waveform of a CMD0 and CMD1 being sent to an SD Card, and what the response looks like? Thanks, TTYL -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist