Systems and Methods for Communication between a PC Application and the DSP in a HDA Audio Codec
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United States of America Patent
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Issued Date -
Mar 5, 2009
app pub date -
Sep 1, 2008
filing date -
Sep 1, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Systems and methods implemented in a PC for enabling communication between an application executing on the CPU and a DSP that is incorporated into a codec in the High Definition Audio (HDA) system, wherein the communication is carried out via the HDA bus. In one embodiment, an HDA codec includes one or more conventional HDA widgets coupled to a programmable processor such as a DSP. The codec includes a set of registers that are configured to store HDA verbs and data transmitted via the HDA bus. The programmable processor is configured to identify verbs that indicate associated information is a communication from an application executing on the CPU, read the associated information, and process the information according to the associated verbs. The information may be program instructions, parametric data, requests for information, etc.
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