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Serial Line Protocol for Embedded Devices

  • US 20110072162A1
  • Filed: 09/01/2010
  • Published: 03/24/2011
  • Est. Priority Date: 09/23/2009
  • Status: Active Grant
First Claim
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1. A method of processing, by a media controller, a command received from a host device coupled to the media controller by a communication link, the method comprising:

  • generating, by a first interrupt generator, a first interrupt when the command is received;

    providing the received command to a receive buffer;

    transmitting an acknowledge signal to the host device;

    if the received command includes a data transfer from the host device;

    transferring data from the host device to the receive buffer;

    processing, by a command processing module of the media controller, the received command including the transferred data, if present;

    if the received command includes a data transfer to the host device;

    receiving a data request from the host device;

    providing, by the command processing module, data corresponding to the data request to the transmit buffer; and

    generating, by a second interrupt generator, a second interrupt when the data corresponding to the data request in the transmit buffer is ready for transmission;

    providing, by a datagram generator of the media controller, datagram data to the transmit buffer; and

    interleaving, by the transmit buffer, transmission of i) the data corresponding to the data request and ii) the datagram data on the communication link.

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