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參數資料
型號: W9960CF
廠商: WINBOND ELECTRONICS CORP
元件分類: 消費家電
英文描述: A Single Chip Multiprotcol High Performance Video CODEC(單片多協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: 33/65頁
文件大小: 368K
代理商: W9960CF
W9960CF
Winbond Confidential
33
June 1997
3.9 GPIO ( General Purpose Input/Ouput) Port
W9960CF provides 4 pins as a GPIO port. These four pins are programmable to be input or
output. GPIO0 and GPIO1 are two open drain IO pads and pull-high resistors are necessary in
application circuits. GPIO2 and GPIO3 are tri-state IO pads. GPIO port is used to connect to
external devices such as analog video decoder and/or audio coprocessor.
wr_(CPU Bus)
rd_(CPU Bus)
GPIO[3:2]
GPIO[1:0]
1
0
0
1
0
0
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
3.10 TIMER
W9960CF provides a programmable pre-scale counter (PSR register) for different Video Clock
input and three period registers (TP0~TP2) for period setting of the temporal reference, time
counter and DRAM reference. W9960 also provides two TR reference counters for decoding and
encoding (DTR and ETR registers). Here is the programming example:
if the video clock (CLK_Video pin) is 13.5MHz, set:
RC2~RC0 to 010b,
P3~P0 to 0011b
TP0= 6DF8h (29.97016frame/sec), 83D5h (25.00 frame/sec),
TP2=000Dh;
If the Video clock is 27MHz, set:
RC2~RC0= 010b,
P3~P0=0100b,
TP0= 6DF8h (29.97016frame/sec), 83D5h (25.00 frame/sec),
TP2=000Dh.
The frequency calculation statement is as:
Fre. = VCLK / ( (2**
(
N+1)
)*(TP+1) )
where VCLK is input frequency of CLK_Video pin, N is the value of RC[2:0], and TP is the
period setting of TP0, TP1, or TP2.
相關PDF資料
PDF描述
W9961CF H.263/H.261 Video Codec
W9967BCF JPEG USB Camera Chip(運用JPEG壓縮技術和通用串行總線結構技術的照相電路數字處理芯片的攝像照相機接口控制器)
W9967CF JPEG USB Camera Chip(運用JPEG壓縮技術和通用串行總線結構技術的照相電路數字處理芯片的攝像照相機接口控制器)
W99681CF JPEG USB Dual Mode Camera Chip(運用JPEG壓縮技術、通用串行總線結構技術、雙制式的照相電路數字處理芯片的攝像照相機接口控制器)
W9971CF Integrated Video Graphics Accelerator(集成的視頻圖形加速器)
相關代理商/技術參數
參數描述
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: