Digital audio system on a chip with configurable GPIOs
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United States of America Patent
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Jul 31, 2007
Grant Date -
May 10, 2007
app pub date -
Sep 25, 2006
filing date -
Nov 29, 2002
priority date (Note) -
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Abstract
A digital audio system on a chip includes a plurality of general purpose input/output (GPIO) modules operably coupled to the bus. Each of the plurality of GPIO modules includes a plurality of GPIO cells, wherein a GPIO cell of the plurality of GPIO cells is coupled to a pin of the digital audio SOC. A first GPIO module of the plurality of GPIO modules functions, in a first mode, as an input/output for system management and functions, in a second mode, as an output. A second GPIO module of the plurality of GPIO modules functions, in a first mode, as an I.sup.2C input/output, and functions, in a second mode, as an input/output.
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