A Multimedia DSP processor design
This Master Thesis presents the design of the core of a fixed point general purpose multimedia DSP processor (MDSP) and its instruction set. This processor employs parallel processing techniques and specialized addressing models to speed up the processing of multimedia applications. The MDSP has a dual MAC structure with one enhanced MAC that provides a SIMD, Single Instruction Multiple Data, unit consisting of four parallel data paths that are optimized for accelerating multimedia applications. The SIMD unit performs four multimedia-oriented 16-bit operations every clock cycle. This accelerates computationally intensive procedures such as video and audio decoding. The MDSP uses a memory bank of four memories to provide multiple accesses of source data each clock cycle.
Summary
This Master's thesis presents the design of a fixed-point multimedia DSP (MDSP) core and its instruction set, emphasizing parallel processing techniques to accelerate audio and video workloads. The document explains the dual-MAC structure with an enhanced 4-way SIMD datapath, four-bank memory organization, and specialized addressing models, and discusses the performance and implementation trade-offs for real-time multimedia processing.
Key Takeaways
- Describe the MDSP core architecture, including the dual MAC and 4-way SIMD datapath optimized for 16-bit multimedia operations.
- Quantify how four-bank memory and parallel MAC execution reduce memory-stall and increase throughput for common multimedia kernels.
- Evaluate fixed-point arithmetic trade-offs and addressing models (including specialized addressing) for real-time audio/video codecs.
- Apply ISA and datapath design principles to accelerate FFTs, audio decoding, and image-processing inner loops on embedded DSPs.
Who Should Read This
Advanced DSP engineers, embedded-systems architects, and graduate students working on hardware/software co-design for real-time multimedia (audio/video) processing and codec acceleration.
Still RelevantAdvanced
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