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參數(shù)資料
| 型號(hào)： | TVP5146M2PFPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號(hào)轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封裝： | GREEN, PLASTIC, HTQFP-80 |
| 文件頁(yè)數(shù)： | 17/107頁(yè) |
| 文件大小： | 1427K |
| 代理商： | TVP5146M2PFPG4 |
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Functional Description
9
SLES141B—August 2007
TVP5146M2PFP
2
Functional Description
2.1
Analog Processing and A/D Converters
Figure 21 shows a functional diagram of the analog processors and ADCs. This block provides the analog
interface to all video inputs. It accepts up to 10 inputs and performs source selection, video clamping, video
amplification, A/D conversion, and gain and offset adjustments to center the digitized video signal.
Clamp
PGA
10-Bit
ADC
CH4 A/D
PGA
CH1 A/D
PGA
CH2 A/D
PGA
CH3 A/D
Line-Locked
Sampling Clock
TVP5146M2 Analog Front End
VI_4_A
M
U
X
VI_1_A
VI_1_B
VI_1_C
M
U
X
VI_2_A
VI_2_B
VI_2_C
M
U
X
VI_3_A
VI_3_B
VI_3_C
10-Bit
ADC
10-Bit
ADC
10-Bit
ADC
Clamp
Figure 21. Analog Processors and A/D Converters
2.1.1 Video Input Switch Control
The TVP5146M2 decoder has 4 analog channels that accept up to 10 video inputs. The user can configure
the internal analog video switches via the I2C interface. The 10 analog video inputs can be used for different
input configurations, some of which are:
Up to 10 selectable individual composite video inputs
Up to four selectable S-video inputs
Up to three selectable analog YPbPr/RGB video inputs and one CVBS input
Up to two selectable analog YPbPr/RGB video inputs, two S-video inputs, and two CVBS inputs
The input selection is performed by the input select register at I2C subaddress 00h (see Section 2.11.1).
2.1.2 Analog Input Clamping
An internal clamping circuit restores the ac-coupled video signal to a fixed dc level. The clamping circuit
provides line-by-line restoration of the video sync level to a fixed dc reference voltage. The selection between
bottom and mid clamp is performed automatically by the TVP5146M2 decoder.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP5146PFPRG4 | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146PFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146PFPG4 | COLOR SIGNAL DECODER, PQFP80 |
| TVP5147M1PFPG4 | COLOR SIGNAL DECODER, PQFP80 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5146M2PFPR | 功能描述:視頻 IC 10B Hi Qual Sgl-Chip Dig Vid Dec 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 |
| TVP5146M2PFPRG4 | 制造商:Texas Instruments 功能描述: |
| TVP5146PFP | 功能描述:視頻 IC 10B High Qual S-Chip Dig Vid 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 |
| TVP5146PFP | 制造商:Texas Instruments 功能描述:IC VIDEO DECODER 10BIT 30MSPS HTQFP-80 制造商:Texas Instruments 功能描述:IC, VIDEO DECODER, 10BIT 30MSPS HTQFP-80 |
| TVP5146PFPG4 | 制造商:Texas Instruments 功能描述:10BIT VIDEO DECODER SMD HTQFP80 |
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