Full duplex serial codec interface with DMA

Details Full duplex serial codec interface with DMA Full duplex serial codec interface with DMA

1996-10-18

1999-03-30

Young, Brian

Coded data generation or conversion

Digital code to digital code converters

395889, 395842, G06F 1300

Patent

active

058894802

ABSTRACT:
A system having a serial interface for a codec containing multiple converters employs a local memory and a DMA (direct memory access) unit for transferring data to and from the codec. To distinguish data associated with each converter, a separate DMA channel is assigned to each converter. Data is transmitted in frames having fields associated with different DMA channels to avoid confusion regarding the source or destination of data.

REFERENCES:
patent: 5297231 (1994-03-01), Miller
patent: 5530902 (1996-06-01), McRoberts et al.
patent: 5553220 (1996-09-01), Keene
"Serial Port 16-Bit SoundComm Codec", Analog Devices AD1843, pp. 20-25, (1996).

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