대한전자공학회논문지SD (Journal of the Institute of Electronics Engineers of Korea SD)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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70MIPS 이내에서 동작하는 MPEG-2 AAC 부호화 칩 설계

An MPEG-2 AAC Encoder Chip Design Operating under 70MIPS

  • Kang Hee-Chul (Dept., of Electronic Engineering Pusan National University) ;
  • Park Ju-Sung (Dept., of Electronic Engineering Pusan National University) ;
  • Jung Kab-Ju (Dept., of Electronic Engineering Pusan National University) ;
  • Park Jong-In (Kumyoung Technology Research Institute) ;
  • Choi Byung-Gab (Dept., of Digital Information Electronics, Incheon City College) ;
  • Kim Tae-Hoon (Voiso Semiconductor Co.) ;
  • Kim Sung-Woo (Defense Quality Assurance Agency)
  • 발행 : 2005.04.01
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초록

MPEG-2 오디오 압축방식인 AAC(Advanced Audio Coding) LC(Low Complexity) 스테레오 부호화기를 고속으로 구현할 수 있는 칩을 32비트 DSP 코어를 기반으로 설계하고 0.25um CMOS 기술을 이용하여 제작하였다. 계산량과 메모리 용량을 줄이기 위하여 알고리즘 구현방법 측면에서 최적화를 하였으며, FFT(Fast Fourier Transform)를 하드웨어로 구현하여 고속화하였다. 제작된 칩의 크기는 $7.20\times7.20 mm^2$ 이었으며 등가 게이트는 약 830,000 이었으며 70MIPS 이내에서 AAC 부호화를 할 수 있음을 확인하였다.

A chip, which can fast encoder the audio data to AAC (Advanced Audio Coding) LC(Low Complexity) that is MPEG-2 audio standard, has been designed on the basis of a 32 bits DSP core and fabricated with 0.25um CMOS technology. At first, the various optimization methods for implementing the algerian are devised to reduce the memory size and calculation cycles. FFT(Fast Fourier Transform) hardware block is added to the DSP core to get the more reduction of the calculation cycles. The chips has the size of $7.20\times7.20 mm^2$ and about 830,000 equivalent gates, can carry out AAC encoding under 70MIPS(Million Instructions per Second).

키워드

참고문헌

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