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参数资料
| 型号： | TVP5151ZQC |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PBGA48 |
| 封装： | GREEN, PLASTIC, BGA-48 |
| 文件页数： | 4/85页 |
| 文件大小： | 958K |
| 代理商： | TVP5151ZQC |
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TVP5151
SLES241D – SEPTEMBER 2009 – REVISED MARCH 2011
www.ti.com
3.5
Luminance Processing
The luminance component is derived from the composite signal by subtracting the remodulated
chrominance information. A line delay exists in this path to compensate for the line delay in the adaptive
comb filter in the color processing chain. The luminance information is then fed into the peaking circuit,
which enhances the high frequency components of the signal, thus improving sharpness.
3.6
Chrominance Processing
For NTSC/PAL formats, the color processing begins with a quadrature demodulator. The Cb/Cr signals
then pass through the gain control stage for chrominance saturation adjustment. An adaptive comb filter is
applied to the demodulated signals to separate chrominance and eliminate cross-chrominance artifacts.
An automatic color killer circuit is also included in this block. The color killer suppresses the chrominance
processing when the burst amplitude falls below a programmable threshold (see I2C subaddress 06h). The
SECAM standard is similar to PAL except for the modulation of color which is FM instead of QAM.
3.7
Timing Processor
The timing processor is a combination of hardware and software running in the internal microprocessor
that serves to control horizontal lock to the input sync pulse edge, AGC and offset adjustment in the
analog front end, vertical sync detection, and Macrovision detection.
3.8
VBI Data Processor (VDP)
The TVP5151 VDP slices various data services such as teletext (WST, NABTS), closed captioning (CC),
wide screen signaling (WSS), etc. These services are acquired by programming the VDP to enable
standards in the VBI. The results are stored in a FIFO and/or registers. The teletext results are stored only
in a FIFO. Table 3-1 lists a summary of the types of VBI data supported according to the video standard. It
supports ITU-R BT. 601 sampling for each.
Table 3-1. Data Types Supported by VDP
LINE MODE REGISTER
NAME
DESCRIPTION
(D0h–FCh) BITS [3:0]
0000b
WST SECAM
Teletext, SECAM
0001b
WST PAL B
Teletext, PAL, System B
0010b
WST PAL C
Teletext, PAL, System C
0011b
WST, NTSC B
Teletext, NTSC, System B
0100b
NABTS, NTSC C
Teletext, NTSC, System C
0101b
NABTS, NTSC D
Teletext, NTSC, System D (Japan)
0110b
CC, PAL
Closed caption PAL
0111b
CC, NTSC
Closed caption NTSC
1000b
WSS/CGMS-A
Wide-screen signaling/Copy Generation Management System-Analog, PAL
1001b
WSS/CGMS-A
Wide-screen signaling/Copy Generation Management System-Analog, NTSC
1010b
VITC, PAL
Vertical interval timecode, PAL
1011b
VITC, NTSC
Vertical interval timecode, NTSC
1100b
VPS, PAL
Video program system, PAL
1101b
Gemstar 2x Custom 1
Electronic program guide
1110b
Reserved
1111b
Active Video
Active video/full field
12
Functional Description
Copyright 2009–2011, Texas Instruments Incorporated
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相关代理商/技术参数 |
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| TVP5151ZQCR | 功能描述:视频 IC UltraLo-Pwr NTSC/PAL SECAM 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 |
| TVP5154 | 制造商:Texas Instruments 功能描述:4-channel 9-bit Video Decoder TVP5154 |
| TVP5154A | 制造商:TI 制造商全称:Texas Instruments 功能描述:4-Channel Low-Power PAL/NTSC/SECAM Video Decoder With Independent Scalers and Fast Lock |
| TVP5154AIPNP | 功能描述:视频 IC 4Ch Lo Pwr PAL/NTSC/ SECAM Video Decoder 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 |
| TVP5154AIPNPR | 功能描述:视频 IC 4Ch Lo Pwr PAL/NTSC/ SECAM Video Decoder 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 |
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