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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)： 20/65頁
文件大小： 368K
代理商： W9960CF
W9960CF
Winbond Confidential
20
June 1997
3.4 Frame Memory DMA Controller ( FDMA )
There are 16 FDMA channels which are used for direct memory accessing between frame
memory ( DRAM ) and the engines. The transfer type can be either Demand or Block Mode.
Each transfer type can be either Linear or Blocking Addressing. The programmer needs to
specify the picture size with PH/PW register, transfer size with the EH/EW register, the picture
starting point with FMSA register and engine starting address with ESP register.
FDMA generates a TC signal to interrupt VRISC when DMA service is completed. When TC
interrupts VRISC, the DMASK bit is cleared automatically. The FDMA requests are queued
when FDMA is busy. The software FDMA has the highest priority.
FDMA channel assignment is as follows:
Channel DMA request
Engine
direction
U
LIN dmd R/W
Description
0
FDREQ
Filter
M> E
U
W
block in for MC
1
DREQ_SWIN
ME
M > E
U
W
block in for Search Window of ME
2
DREQ_CBLK
ME
M > E
W
block in for Current Block of ME
3
FODREQ
Filter
E > M
R
block out for BY-pass Filter
4
DRQDMAIN
DCT/IDCT
M > E
W
block in for DCT
5
DRQIDCTR_D DCT/IDCT
E > M
R
block out for Decoder Re-Construct
6
DRQDCTR_E DCT/IDCT
E > M
R
block out for Encoder Re-Construct
7
dreqV
Video_In
E > M
dmd
R
Chrom Cr of Video Capture
8
dreqU
Video_In
E > M
dmd
R
Chrom Cb of Video Capture
9
dreqY
Video_In
E > M
dmd
R
Lum Y of Video Capture
10
dreqY
Video_Out
M > E
dmd
W
Lum Y of Display
11
dreqU
Video_Out
M > E
dmd
W
Chrom Cb of Display
12
dreqV
Video_Out
M > E
dmd
W
Chrom Cr of Display
13
DREQ_ENCF
PIO
M > E
LIN
dmd
W
Encoder bitstream out
14
DREQ_DECF
PIO
M > E
LIN
dmd
W
Decoder bitstream from FM to VLD
15
DREQ_IPTF
PIO
E > M
LIN
dmd
R
Incoming decoding bitstream from
PIO input FIFO to FM
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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