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| 型號： | TW9903 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | TW9903 ? Multi-standard Video Decoder With High Quality Down Scaler |
| 中文描述： | TW9903？多標(biāo)準(zhǔn)視頻解碼器，高品質(zhì)下倍線器 |
| 文件頁數(shù)： | 17/74頁 |
| 文件大小： | 630K |
| 代理商： | TW9903 |
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TW9903
TECHWELL, INC.
17
REV. 0.92 ( B )
06/02/2002
Figure 10. VACTIVE and LVALID timing
DVALID and VCLK
In a 601 pixel format, the active video resolutions are either 720 x 480 for the 525/60 video systems
or 720 x 576 for the 625/50 systems. In a square pixel operation, the active video resolutions are
either 640 x 480 for the 525/60 video systems or 768 x 576 for the 625/50 systems. The DVALID is
used to indicate the valid active pixels data output during a active video line. DVALID is also used
to indicate valid VBI data. If VBI EN(Reg0x19[7]) is set to “1,DVALID always has valid timing
while HACTIVE is active .
The DVALID can be configured to output in three different formats. This is determined by the
DVALID (0x03[5:4]) register.
In the first format, the DVALID output is asserted for valid pixel during the valid pixel time on video
lines. The VCLK is gated by DVALID for proper pixel data strobing. For 8-bit output mode, VCLK is
the inverted CLK2 and masked to “0” value while DVALID is invalid in order to indicate valid pixel
data. For 16-bit output mode, CLKX1 is used instead of CLK2.
In the second format, the DVALID output has the same timing as the first format s. VCLK is
inverted CLKX2 or CLKX1. In 8bit output mode, LEN(Reg0x3[6]=0),VCLK is inverted CLKX2.In
16-bit output mode, LEN(Reg0x03[6]=1),VCLK is inverted CLKX1.
In the third format, the DVALID has the same timing as VCLK of the first format. VCLK has the
same timing as the second formats.
VCLK wave changes by LEN(Reg0x03[6]) setting. If LEN is set to “1, its waveform will be similar
to inverted CLKX1. If LEN is set to “0”, its waveform will be similar to inverted CLKX2. In third
format, DVALID signal also changes by LEN setting. DVALID signal and VCLK signal dont have
any hazard pulse. Both DVALID and VCLK can be used as clock pulse.
If CNTL656(Reg0x19[3]) is set to “0” in down scaling mode, TW9903 outputs Y invalid data as
0x10 and CbCr invalid data as 0x80 during HACTIVE active time. If CNTL656 is set to “1” in down
scaling mode, TW9903 outputs Y invalid data 0x00 and CbCr invalid data 0x00. In 8-bit output
mode, the CbCr invalid data is output first and then Y invalid data. TW9903 outputs only even
number invalid data in invalid period during HACTIVE active time. TW9903 always outputs CbCr
and Y 2-byte pair format data as valid data or invalid data.
H S Y N C
LVALID
VACTIVE
Changed by VDELAY
Changed by VACTIVE
VBI LINE
Start Line
Start Line in both odd and even field :
6(625 line video system)
10(525 line video system)
LVALID in VBI LINE is always high if VBI EN is "1".
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TW9903-FB | 功能描述:IC DECODER VIDEO NTSC/PAL/SECAM RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| TW9903-MB | 功能描述:IC DECODER VIDEO NTSC/PAL/SECAM RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| TW9903-MBS | 功能描述:IC NTSC/PAL/SECAM DECODR 100PQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| TW9905-FD | 功能描述:IC DECODER VIDEO NTSC/PAL/SECAM RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| TW9905-MD | 功能描述:IC DECODER VIDEO NTSC/PAL/SECAM RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
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