4-bit SD Card mode

Björn König bkoenig at alpha-tierchen.de
Thu Jun 7 10:16:15 UTC 2007


Neil wrote:
> The controllers I've encountered all have a "1
> bit/4 bit" mode setting, and as long as you tell the card to go in to 4
> bit mode and set it in the hardware as well, the SD controller handles
> everything for you.

You are right; I had an error in reasoning. It should handle it.

> What is the CPU in question?

There are issues with AT91RM9200, but now I think the problem is something
else than I assumed.

Thanks
Björn




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