Software – General Concepts

The General USB Process

How Data is Transferred in USB

Transfer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transaction

 

 

Transaction

 

 

 

 

 

 

 

 

TM

Each transfer can contain multiple transactions and a transaction can span multiple frames

The host schedules transactions within the 1mS frame.

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Image 94
Freescale Semiconductor TWR-MCF52259-Ethenet manual Transfer Transaction