Audio processing chip with external serial port
First Claim
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1. A monolithic audio signal processing circuit, comprising:
- a coder-decoder module, including;
a digital to analog decoder circuit, and an analog to digital encoder circuit;
a synthesizer module for generating digital audio data, including;
a synthesizer parallel to serial converter circuit;
an external serial port for providing serial format communication between said signal processing circuit and external devices;
a serial data transfer control circuit for enabling serial data transfer between said coder-decoder module and said synthesizer module;
wherein said synthesizer module parallel to serial converter circuit converts synthesizer parallel format data to serial format data in said synthesizer module for transfer to said coder-decoder module under the control of said serial data transfer control circuit; and
a record FIFO for storing audio data, wherein said serial transfer control circuit includes a data path and control circuitry for transferring audio data to said record FIFO from said synthesizer module via said external serial port.
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Abstract
This invention is for a single monolithic audio processing integrated circuit which includes a synthesizer module, a CODEC module and an external serial data port in the CODEC module for bi-directional serial data communication between the CODEC module and an external serial data device, such as a digital signal processor. A serial data path between the synthesizer module and the CODEC module is also included.
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Citations
17 Claims
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1. A monolithic audio signal processing circuit, comprising:
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a coder-decoder module, including;
a digital to analog decoder circuit, and an analog to digital encoder circuit;a synthesizer module for generating digital audio data, including;
a synthesizer parallel to serial converter circuit;an external serial port for providing serial format communication between said signal processing circuit and external devices; a serial data transfer control circuit for enabling serial data transfer between said coder-decoder module and said synthesizer module; wherein said synthesizer module parallel to serial converter circuit converts synthesizer parallel format data to serial format data in said synthesizer module for transfer to said coder-decoder module under the control of said serial data transfer control circuit; and a record FIFO for storing audio data, wherein said serial transfer control circuit includes a data path and control circuitry for transferring audio data to said record FIFO from said synthesizer module via said external serial port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An audio signal processing circuit, comprising:
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a coder-decoder module including digital to analog decoding circuitry; an external serial port for providing serial format communication between said signal processing circuit and external devices; a serial transfer control circuit for enabling serial format communication between said coder-decoder module and said external serial port; a synthesizer module which includes a synthesizer parallel to serial converter circuit which converts synthesizer parallel format data to serial format data; and a record FIFO for storing audio data, wherein said serial transfer control circuit includes a data path and control circuitry for transferring audio data to said record FIFO from said synthesizer module via said external serial port. - View Dependent Claims (10, 11, 12, 13)
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14. An audio signal processing circuit, comprising:
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a coder-decoder module, including a digital to analog decoder circuit; a synthesizer module for generating digital audio data, including a synthesizer parallel to serial converter circuit within said synthesizer module which converts synthesizer parallel format data to serial format data; a serial port for providing serial format communication between said signal processing circuit and external devices; a serial transfer control circuit for enabling serial data transfer between said coder-decoder module and said synthesizer module;
said serial transfer circuit further comprising a data path and control circuitry for enabling serial data transfer from said synthesizer module to said serial port; anda record FIFO for storing audio data, wherein said serial transfer control circuit includes a data path and control circuitry for transferring audio data to said record FIFO from said synthesizer module via said serial port. - View Dependent Claims (15, 16, 17)
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Specification