Wednesday, August 15, 2012

TMS320 DSP Standard Interface for Negotiating DMA Resources


TMS320 DSP Standard Interface for Negotiating DMA Resources

TMS320 DSP Algorithm Standard (xDAIS) compliant algorithms designed for the ‘C64x+ EDMA3 controller must implement the IDMA3 interface to publish and acquire DMA resources they will use. The application framework DMA Resource Manager (DMAN3 is one reference implementation provided by the Framework Components) calls IDMA3 interface functions to query and subsequently allocate and grant the requested DMA resources. The IDMA3 interface is similar to the xDAIS IDMA2 interface in terms of its definition and role. IDMA3 introduces the notion of a logical DMA channels abstraction via a handle similar to that used in IDMA2.

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