on ST100. AN1482 Datasheet

AN1482 ST100. Datasheet pdf. Equivalent

Part AN1482
Description MPEG2 Main Profile Video Decoding on ST100
Feature www.DataSheet4U.com AN1482 APPLICATION NOTE MPEG2 Main Profile Video Decoding on ST100 By Maurizio .
Manufacture ST Microelectronics
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AN1482
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AN1482
APPLICATION NOTE
MPEG2 Main Profile Video Decoding on ST100
By Maurizio COLOMBO
ABSTRACT
This document reports the results of the porting of a MainProfile@MainLevel MPEG-2 decoder on ST120.
This is the standard notably used for DVD.
CONCLUSION
The optimized application needs 228.4 MCycles/s to decode 25 PAL frames/s in the case of M=3, N=12,
bitrate=15 Mbps. In this evaluation we assume that all the data are into the XY internal memories (ideal
DMA).
October 2001
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AN1482
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AN1482 - APPLICATION NOTE
TABLE OF CONTENTS
PAGE
1
OVERVIEW ON MAIN PROFILE DECODING ..........................................................
3
2
PROFILING OF THE CODE ......................................................................................
4
2.1
WANG IDCT ................................................................................................................
4
2.2
ADD_PREDICTION() ..................................................................................................
4
2.3
HUFFMAN DECODING/INV QUANT/INVERSE SCAN ..............................................
4
2.4
TEMPORAL PREDICTION..........................................................................................
5
2.5
BITSTREAM PARSING ...............................................................................................
5
3
PERFORMANCE OF THE DECODER ......................................................................
6
4
REFERENCES ...........................................................................................................
7
5
ACRONYMS AND DEFINITIONS ..............................................................................
7
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