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參數(shù)資料
| 型號： | TVP5154APNPR |
| 廠商： | Texas Instruments |
| 文件頁數(shù)： | 80/93頁 |
| 文件大小： | 0K |
| 描述： | IC VIDEO DECODER 4CH 128-HTQFP |
| 產品培訓模塊： | Data Converter Basics |
| 標準包裝： | 1 |
| 類型： | 視頻解碼器 |
| 應用： | 安全系統(tǒng) |
| 電壓 - 電源，模擬： | 1.8V |
| 電壓 - 電源，數(shù)字： | 1.8V，3.3V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 128-TQFP 裸露焊盤 |
| 供應商設備封裝： | 128-HTQFP（14x14） |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 887 (CN2011-ZH PDF) |
| 配用： | TVP5154EVM-ND - TVP5154EVM 296-23058-ND - EVAL MODULE FOR DM642 |
| 其它名稱： | 296-23027-6 |
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Field 0
Field 1
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Field 0
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Field 0
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Field 1
www.ti.com
SLES214C – DECEMBER 2007 – REVISED SEPTEMBER 2010
8.4
Field Interleaving
In systems where either there are insufficient video ports on the back end processor to accommodate both
scaled and unscaled video streams, or where the back end processor does not have sufficient processing
power to perform compression on the unscaled image at the same time as other video processing, such
as composting of scaled images for display, it is possible to configure the TVP5154A to output different
image types on consecutive fields. In this configuration, the field rates for each of the scaled and unscaled
images is reduced to accommodate the interleaving of fields, while maintaining a 27-MHz pixel clock.
This is useful in video recording systems that are required to display a scaled image but still wish to
compress and store full resolution images, albeit at reduced field rates.
Field interleaving can generate a sequence of up to 16 fields, where each field can be either unscaled,
scaled, or blank.
8.4.1
Registers
The field loop count register controls how many fields are in the sequence. The field mode registers
control the output field type for each field.
Figure 8-3 shows how to configure field interleaving for a sequence of five fields where the first field is
unscaled, the second field is scaled, the third field is blank, the fourth field is scaled, and the fifth field is
blank.
Figure 8-3. Field Interleaving
Various additional registers exist to configure how the TVP5154A indicates to the back-end processor the
state of the current field. The Output Control register 1Fh allows the scaled/unscaled status to be indicated
by the upper bit of the SAV/EAV codes. The Output Control register 1Fh also allows the scaled/unscaled
status to be indicated by the DID codes of ancillary data.
Copyright 2007–2010, Texas Instruments Incorporated
Scaler Configuration
81
Product Folder Link(s): TVP5154A
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5154EVM | 功能描述:視頻 IC 開發(fā)工具 TVP5154 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V |
| TVP5154PNP | 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 |
| TVP5154PNP | 制造商:Texas Instruments 功能描述:4-Channel Video Decoder |
| TVP5154PNPG4 | 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 |
| 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 |
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