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參數(shù)資料
型號(hào)： W9960CF
廠商： WINBOND ELECTRONICS CORP
元件分類： 消費(fèi)家電
英文描述： A Single Chip Multiprotcol High Performance Video CODEC(單片多協(xié)議高性能視頻編解碼器)
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP208
封裝： PLASTIC, QFP-208
文件頁數(shù)： 48/65頁
文件大?。?/td> 368K
代理商： W9960CF
W9960CF
Winbond Confidential
48
June 1997
3.18 Variable Length Code Encoding (VLE) Engine
There are two modules in VLE Engine, one is for Tcoeff (Transform coefficient) encoding and the
other is for variable length encoding. The Tcoeff is based on the run level pair generated from
the result of DCT/Quantization and pushed into the 16x32-bit Tcoeff_FIFO. When DCT/Q is
completed, VRISC shall check some conditions such as checksum register and determine
whether to trigger RLC ( Run Level Code ) to generate transform coefficient. When all blocks is
encoded into Tcoeff_FIFO, VRISC shall read Bit Length Register to check how many bits are
generated (overflow condition if Bit Length Register is over 512, busy condition if Bit Length
Register is Zero). Then VRISC read out the Tcoeff value from Tcoeff Result Register. VLE_INT
will assert when the coding bit length is over the threshold of Tcoff_FIFO. VRISC can also write a
command including data and table-indicator into Command Register to generate variable length
code ( except Tcoeff ).
Block Diagram
DCT/QUANT
RLC
Tcoeff-VLE
16 x 32bit
FIFO
DCT_Trig
DCT_rdy
VLE_INT
( Tcoeff FIFO overflow )
RLC_Trig
Tcoeff Result Register
Bit Length Register
VLE Command Register
VLC Table
VLE Result Register
INTRA/
INTER
H261/H263/MPEG/JPEG
VLE Register
RISC Address/PCI Offset Address
Name
Read/Write
Description
01B4H / 06D0H
BLR
R
Bit Length Register
01B5H / 06D4H
TRR
R
Tcoeff Result Register
01B6H / 06D8H
VRR
R
VLE Result Register
01B7H / 06DCH
VCR
W
VLE Command Register
相關(guān)PDF資料
PDF描述
W9961CF H.263/H.261 Video Codec
W9967BCF JPEG USB Camera Chip(運(yùn)用JPEG壓縮技術(shù)和通用串行總線結(jié)構(gòu)技術(shù)的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
W9967CF JPEG USB Camera Chip(運(yùn)用JPEG壓縮技術(shù)和通用串行總線結(jié)構(gòu)技術(shù)的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
W99681CF JPEG USB Dual Mode Camera Chip(運(yùn)用JPEG壓縮技術(shù)、通用串行總線結(jié)構(gòu)技術(shù)、雙制式的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
W9971CF Integrated Video Graphics Accelerator(集成的視頻圖形加速器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W9961CF 制造商:WINBOND 制造商全稱:Winbond 功能描述:H.263/H.261 Video Codec
W9966CF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
W9966TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
W99681CF 制造商:WINBOND 制造商全稱:Winbond 功能描述:JPEG USB Dual Mode Camera Chip
W99685 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
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