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CDC EEM represents the "glue" between the USB domain and the Ethernet domain. The USB device stack along with the CDC EEM subclass is seen as the physical layer by the network stack. A simple driver is needed to interface the network stack to the CDC EEM subclass. Figure - CDC EEM Architecture and Interactions shows the architecture and interactions of a network device using the CDC EEM subclass.
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Buffer management
The CDC EEM subclass implementation offers a queuing mechanism for receive and transmit buffers.
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