- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98306 > TVP5154PNPG4 (TEXAS INSTRUMENTS INC) COLOR SIGNAL DECODER, PQFP128 PDF資料下載
參數(shù)資料
| 型號(hào)： | TVP5154PNPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號(hào)轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP128 |
| 封裝： | PLASTIC, HTQFP-128 |
| 文件頁數(shù)： | 61/77頁 |
| 文件大小： | 795K |
| 代理商： | TVP5154PNPG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁當(dāng)前第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁
www.ti.com
9.3.9
Vertical Scaling Control
9.3.10 Horizontal Scaling Control
10 Scaler Configuration
10.1 Overview
TVP5154
4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER
WITH INDEPENDENT SCALERS AND FAST LOCK
SLES163A – MARCH 2006 – REVISED JULY 2006
Address
3ACh
Default
2100h
7
6
5
4
3
2
1
0
VERT_COEF[7:0]
15
14
13
12
11
10
9
8
Reserved
1
Enable
Reserved
VERT_COEF[8]
Enabled: Enable vertical and horizontal scaler
0 = Disable scaler (default)
1 = Enable scaler
VERT_COEF [8:0]: Vertical scaling coefficient
VERT_COEF = (Vdesired/Vactive)
× 256
Address
3ADh
Default
400h
7
6
5
4
3
2
1
0
HORZ_COEF[7:0]
15
14
13
12
11
10
9
8
Reserved
HORZ_COEF[14:8]
HORZ_COEF[14:0]:
Horizontal scaling coefficient, MSB five bits are integer values and LSB ten bits are fraction numbers.
HORZ_COEF = Hactive/Hdesired
The TVP5154 contains four independent scalers, one for each video decoder channel. Each scaler is able
to filter and scale both horizontally and vertically to different ratios.
Horizontally, a 7-tap poly-phase filter is used to ensure optimal scaling performance, and can be
configured to scale to any output size below the input resolution, in decrements of two pixels. Vertically a
running average filter is used to filter vertically and can be configured to scale to any output size below the
input resolution.
When scaling horizontally, the output pixels are packed together to allow continuous reading of the pixels.
AVID should be configured so that it qualifies the active pixels, allowing the receiving back end to ignore
nonactive pixels. When scaling vertically, inactive lines are not removed from the output since there is no
internal frame memory. The receiving back end must use AVID to qualify active lines/pixels. AVID can be
configured to be either active or inactive during invalid output lines.
Due to the fact that vertical scaling is performed on a field basis, it is possible that the vertical resolution
will be reduced due to filtering across lines within the field, rather than adjacent lines in the frame. Aliasing
will not occur, but the output image will appear soft vertically. If the desired scaling ration is 0.5, this can
be achieved by simply ignoring every other field. This maintains sharpness, but may introduce aliasing
artifacts.
Scaler Configuration
64
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP5154PNPRG4 | COLOR SIGNAL DECODER, PQFP128 |
| TVP5154PNPR | COLOR SIGNAL DECODER, PQFP128 |
| TVP5154PNP | COLOR SIGNAL DECODER, PQFP128 |
| TVP5157PNPR | COLOR SIGNAL DECODER, PQFP128 |
| TVP5157PNP | COLOR SIGNAL DECODER, PQFP128 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5154PNPR | 功能描述:視頻 IC 4Ch Lo Pwr PAL/NTSC SECAM Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TVP5154PNPRG4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK |
| TVP5156PNP | 功能描述:視頻 IC 4Ch NTSC/PAL Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TVP5156PNPR | 功能描述:視頻 IC 4Ch NTSC/PAL Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TVP5157PNP | 功能描述:視頻 IC 4Ch NTSC/PAL Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。