Transcription of AN1247, Communication Device Class (CDC) Host
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AN1247, Communication Device Class (CDC) Host
an1247 . Communication Device Class (CDC) host Communications Interface Class (CIC) The CIC. Author: Amardeep Gupta defines a general purpose mechanism that can be Microchip Technology Inc. used to enable all types of Communication services on the USB. This interface consists of INTRODUCTION two elements: - A management element With the introduction of Microchip's microcontroller with USB OTG (Universal Serial Bus On-The-Go) periph- The management element configures and eral, implementing an embedded host has become controls the Device ; it consists of Endpoint 0. easier. USB is used in several types of Communication - A notification element devices . The USB specification defines an architecture The notification element is optional and is used that is capable of supporting most Communication to handle transport events. The notification devices which use the USB Communications Device element can be used to transfer information Class (CDC). from Device to host , which may then prompt the This application note describes how to develop a USB host to initiate a transfer over the management CDC application using a Microchip USB OTG element.
AN1247 DS01247A-page 4 © 2009 Microchip Technology Inc. GetLineCoding This request allows the host to find currently configured line coding parameters.
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