CMX OTG on coldfire

LPs1978 — Thu, 12 Mar 2009 21:29:02 GMT

Hi all,

I'm starting evaluating the CMX USB LITE for ColdFire. I'm a nubble in USB matters...(readers are advised )

I'm analyzing the USB OTG demo and something is not so clear.

As far as I know the MCF2221 has a USB OTG internal module, but in the example an external I2C to USB OTG converter is used: MAX 3353.

In the code you can see that routintes refer to I2C module to communicate with this device to allow to use this type of USB.

My first question is: Am I in wrong or doesn't CMX USB LITE support the internal ColdFire module?

I'll start a new application with MCF52252AF80, do someone have ported this stack to an 5225X coldfire?

Thank you!!

Re: CMX OTG on coldfire

LPs1978 — Thu, 12 Mar 2009 23:18:26 GMT

Ok, I understand a little bit better the demo.

The MAX3353 is used to manage the role of OTG.

Means this that I cannot perform all with USB OTG module of ColdFire ?