Facundo Jorge

HELP!!!! - UF32 Can't make SDCLK signal work

Discussion created by Facundo Jorge on Mar 16, 2006
Latest reply on Mar 20, 2006 by Jeff Smith
I read the manuals, the reference design code, everything. I just can't make this thing work. All I want is the absolut minimum settings to get a CMD0 out at the 100 pin version. I have been squeezing my brain out trying to make this work, so far unsuccesfully.
This are the simptoms:
- I configure the SDCLK line as a GPIO and drive it on and off sucessfully. (no short circuit there)
- When I turn on the SD module and send a CMD0 i get this clock signal:
CH1=SDCLK
CH2=SDCMD
 
The outcome is the same no matter if i plug the SD card or not. I'm guessing is some sort of pin redirection problem or something like that because the other signals are ok. As I said earlier the pin works fine when I use it as GPIO.
  I just don't know what is going on. Please help!

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