Hello all, I'm working with an AT91SAM9G20-EK to do network video acquisition through it's ISI. After a (short) acquisition I copy the video from SDRAM to an SDHC card on the MCI. I've tested SDHC cards of class 2,4,6 and 10 running at 60MHz. All classes work fine and perform at the speed one would expect from the SD v2.0 definition (class 10 runs at 10MB/s). I do however have two questions:

1. Has anyone implemented SD v3.01 on ARM9? Is it even possible?

2. I am able to enable/disable Read/Write proofing in the MCI mode register but executing a write operation (to the SD card) always re-enables these options. I can't find where this is happening. Any ideas?

Thanks,
Jon