Design and Implementation of EDMA Controller for AI based DSP SoCs for Real- Time Multimedia Processing

Abstract

Processing of the multiple data streams demand highperformance multiple transfers overburden the Processor System on Chips (SoC) in real time multimedia processing applications. High performance direct memory access (DMA) controller eases the processor as it performs bulk data transfer without the intervention of processor. This is true even in most artificial intelligence (AI) based systems and interleaving functions in communication systems where high-speed bulk data transfers are required. This is achieved by the design of Enhanced Direct Memory Access (EDMA) Controller, for high speed bulk data transfers. Paper presents the design of enhanced DMA core which is synthesizable ready to integrate for high performance AI based Digital Signal Processing SoC. The EDMA core is used for flexible Memory Access and bulk data transfers. EDMA core support several methods for data transfer between an input or output (I/O) device and the core processing unit. The processor in the SoC is used to program the Direct Memory Access (DMA) transfer instructions and actual transfers are performed by the EDMA core without the interference of processor. The EDMA design supports flexible addressing modes like linear, circular, step for bulk data transfers. The EDMA core is planned to be verified with test cases as in realistic application scenarios of interleaving, real time video processing.