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A Novel Dynamically Programmable Arithmetic Array (DPAA) Processor for Digital Signal Processing
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/03/01
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section of Selected Papers from the 13th Workshop on Circuits and Systems in Karuizawa)
DPAA, DSP, parallel processing, interconnection topology, routing flexibility,
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A new architecture-based Dynamically Programmable Arithmetic Array processor (DPAA) is proposed for general purpose Digital Signal Processing applications. Parallelism and pipelining are achieved by using DPAA, which consists of various basic arithmetic blocks connected through a code-division multiple access bus interface. The proposed architecture poses 100% interconnection flexibility because connections are done virtually through code matching instead of physical wire connections. Compared to conventional multiplexing architectures, the proposed interconnection topology consumes less chip area and thus, more arithmetic blocks can be incorporated. A 16-bit prototype chip incorporating 10 multipliers and 40 other arithmetic blocks had been implemented into a 4.5 mm 4.5 mm chip with 0.6 µm CMOS process. DPAA also features its simple programmability, as numerical formula can be used to configure the processor without programming languages or specialized CAD tools.