Digital audio system on a chip with configurable GPIOs

Details Digital audio system on a chip with configurable GPIOs Digital audio system on a chip with configurable GPIOs

2007-07-31

2007-07-31

Tran, Anh Q. (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Array

C326S038000, C326S047000

Reexamination Certificate

active

11526839

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 I2C input/output, and functions, in a second mode, as an input/output.

REFERENCES:
patent: 6347344 (2002-02-01), Baker et al.
“STMP3400 Audio Decoder with USB Interface and Voice Record” 2001, 5-3400-P1-03-0301, pp. 1-3.

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