Author(s)

Takashi Kambe, Nobuyuki Araki

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The size and performance of a System LSI depend heavily on the architecture which is chosen. As a result, the architecture design phase is one of the most important steps in the System LSI development process and is critical to the commercial success of a device. In this paper, we propose a C-based variable length and vector pipeline (VVP) architecture design methodology and apply it to the design of the output probability computation circuit for a speech recognition system. VVP processing accelerated by loop optimization, memory access methods, and application-specific cir- cuit design was implemented to calculate the Hidden Markov Model (HMM) output probability at high speed and its performance is evaluated. It is shown that designers can explore a wide range of design choices and generate complex circuits in a short time by using a C-based pipeline architecture design method.

Variable Length and Vector Pipeline Architecture; C-Based Design; System LSI; Speech Recognition

T. Kambe and N. Araki, "A C-Based Variable Length and Vector Pipeline Architecture Design Methodology and Its Application," Circuits and Systems, Vol. 3 No. 1, 2012, pp. 10-16. doi: 10.4236/cs.2012.31002.