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参数资料
| 型号： | TVP5146M2IPFPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封装： | GREEN, PLASTIC, HTQFP-80 |
| 文件页数： | 18/107页 |
| 文件大小： | 949K |
| 代理商： | TVP5146M2IPFPR |
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Copy
Protection
Detector
VBI Data
Processor
Output
Formatter
Composite
Processor
CVBS/Y
C
YCbCr
Y[9:0]
Timing
Processor
AVID
FID
GLCO
XTAL1
XTAL2
RESETB
Component
Processor
CH1 A/D
CH2 A/D
CH3 A/D
Pr/R
Pb/B
Y/G
YCbCr
FSS
HS/CS
VS/VBLK
DATACLK
C[9:0]
CH4 A/D
CVBS/Y/G
Host
Interface
SCL
SDA
Slice VBI Data
2
Decimation
PWDN
2
Decimation
2
Decimation
2
Decimation
SLES141G
– JULY 2005 – REVISED APRIL 2011
programmed to two formats: 20-bit 4:2:2 with external syncs or 10-bit 4:2:2 with embedded/separate
syncs. The circuit detects pseudosync pulses, AGC pulses, and color striping in Macrovision-encoded
copy-protected material. Information present in the VBI interval can be retrieved and either inserted in the
ITU-R BT.656 output as ancillary data or stored in internal FIFO and/or registers for retrieval via the host
port interface.
Figure 2-2. Digital Video Processing Block Diagram
2.2.1
2x Decimation Filter
All input signals are oversampled by a factor of two (27 MHz). The A/D outputs first pass through
decimation filters that reduce the data rate to 1
× the pixel rate. The decimation filter is a half-band filter.
Oversampling and decimation filtering can effectively increase the overall signal-to-noise ratio by 3 dB.
2.2.2
Composite Processor
Figure 2-3 is a block diagram of the TVP5146M2 digital composite video processing circuit. This circuit
receives a digitized composite or S-Video signal from the ADCs and performs Y/C separation (bypassed
for S-Video input), chroma demodulation for PAL/NTSC and SECAM, and YUV signal enhancements.
The 10-bit composite video is multiplied by the subcarrier signals in the quadrature demodulator to
generate color difference signals U and V. The U and V signals are then sent to low-pass filters to achieve
the desired bandwidth. An adaptive 5-line comb filter separates UV from Y based on the unique property
of color phase shifts from line to line. The chroma is remodulated through a quadrature modulator and
subtracted from line-delayed composite video to generate luma. This form of Y/C separation is completely
complementary, thus there is no loss of information. However, in some applications, it is desirable to limit
the U/V bandwidth to avoid crosstalk. In that case, notch filters can be turned on. To accommodate some
viewing preferences, a peaking filter is also available in the luma path. Contrast, brightness, sharpness,
hue, and saturation controls are programmable through the host port.
18
Functional Description
Copyright
2005–2011, Texas Instruments Incorporated
Product Folder Link(s): TVP5146M2
相关PDF资料 |
PDF描述 |
|---|---|
| TVP5146M2IPFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2PFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2PFPRG4 | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2PFPG4 | COLOR SIGNAL DECODER, PQFP80 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TVP5146M2PFP | 功能描述:视频 IC 10B Hi Qual Sgl-Chip Dig Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5146M2PFP_0708 | 制造商:TI 制造商全称:Texas Instruments 功能描述:NTSC/PAL/SECAM 4X10-Bit Digital Video Decoder With Macrovision Detection, YPbPr/RGB Inputs, 5-Line Comb Filter, and SCART Support |
| TVP5146M2PFPG4 | 制造商:TI 制造商全称:Texas Instruments 功能描述:NTSC/PAL/SECAM 4X10-Bit Digital Video Decoder With Macrovision Detection, YPbPr/RGB Inputs, 5-Line Comb Filter, and SCART Support |
| TVP5146M2PFPR | 功能描述:视频 IC 10B Hi Qual Sgl-Chip Dig Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5146M2PFPRG4 | 制造商:Texas Instruments 功能描述: |
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