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The 800MHz System-on-Chip implements the C64x VLIW DSP VelociTI.2/spl trade/ Architecture and delivers 6400 MIPS, 3200 16-bit MMACs, 6400 8-bit MMACs at 0.17 mW/MMAC (8 bit). The chip is implemented in state of the art 90 nm CMOS technology with 7-layer copper metalization. The core dissipates 1080 mW at 800 MHz, 1.2V. The system-on-chip is targeted for high performance wireless infrastructure application. It has an 8-way VLIW DSP core, a 2-level memory system, and an I/O bandwidth of 3.2GB/s.

As frequency and processing capabilities of today's Digital Signal Processors (DSPs) are increasing, so is the needed data rate to fully utilize the available processing bandwidth. Moreover, high-end applications may require multiple DSP's on a single chip, further pushing the data rate requirements. There are varying external devices with which the processors may wish to communicate concurrently. A 'plug and play' like approach for external devices and a scalable high-performance multi-processor data rate solution would be highly desirable. In this paper, a scalable, high performance Direct Memory Access (DMA) architecture for all on-chip and off-chip data communication between multiple processors and various external devices is proposed. This architecture has been implemented on Texas Instruments TMS320C6211 C6x DSP.