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AM335x EVM tools techincal issue

Dear Sir,

 

I start a design for AM335x EVM board and found below issue, any comment?

1. Bad preference and Wifi Fail when run on Kingston Class 10 SD card or TI SD card, but it can run normally on SanDisk Class 4 SD card. As mentioned from TI menu, it seems that only SanDisk and Sony brand can run normally. It is quite strange for us.

 2., the black screen will appear for 1 sec once access to the application

3. Two SD slot on development kit but only one can be active.

4. I would like to confirm the AM335 OTG port required through USB hub to connect low speed USB device (USB1.1 Keyboard)?

B.R.

Edwin