Freescale Semiconductor TWR-MCF52259-Ethenet User Manual page 103

How Does the Host Know a Device's Requirements?
Device Descriptor
Configuration Configuration
Descriptor Descriptor
TM
Interface Interface
Interface Interface
Descriptor Descriptor
Descriptor Descriptor
Endpoint Endpoint Endpoint Endpoint Endpoint Endpoint Endpoint Endpoint
Descriptor Descriptor Descriptor Descriptor Descriptor Descriptor Descriptor Descriptor
Upon detecting a USB device connection the host, using these
descriptors, configures the device and loads the proper driver program.
This configuration process is called "enumeration."