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Make a DSP TMS320VC33 a host.

Other Parts Discussed in Thread: TMS320VC33

I have scoured the internet for at least a week before posting this.

I have an existing PLC with a TMS320VC33 and I am trying to add the function of reading/writing from/to a USB pen drive from it.

What I know: 

I have a working knowledge of how USB is supposed to work.

I need to make this existing PLC a host.

What I don't know:

What chip do I need to connect to the DSP to get host functionality?

How I can get help with developing my own host controller stack or getting one that will work with my implementation?

What the best implementation of USB would be.  USB-OTG, USB 2.0, 3.0, etc.?