Sean McCartan

MCF52211 USB

Discussion created by Sean McCartan on Mar 13, 2009
Latest reply on Jul 11, 2009 by Paul Kamel

I am currently doing a design using the Coldfire MCF52211CAE66 CPU implementing USB.

 

Should one use an external crystal / oscillator for this, or is the on-chip relaxation oscillator accurate / stable enough for use with USB?

 

Are there any application notes around for implementing the CMX USB stack from a new project? There are a number of example projects around for other Coldfire micros, but I am wanting to know how to include / add the CMX stack to a 'new' project. A CDC virtual serial port would be fine for starters.

 

Thanks.

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