參數(shù)資料
型號(hào)： TVP5154PNPRG4
廠商： Texas Instruments, Inc.
英文描述： 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK
中文描述： 4通道低功耗PAL / NTSC制式/ SECAM制式，帶有獨(dú)立的定標(biāo)器和視頻解碼器快速鎖定
文件頁(yè)數(shù)： 2/78頁(yè)
文件大小： 824K
代理商： TVP5154PNPRG4
www.ti.com
1.3 Description
TVP5154
4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER
WITH INDEPENDENT SCALERS AND FAST LOCK
SLES163A–MARCH 2006–REVISED JULY 2006
The TVP5154 device is a 4-channel, low-power, NTSC/PAL/SECAM video decoder. Available in a
space-saving 128-pin thin quad flat pack (TQFP) package, each channel of the TVP5154 decoder
converts NTSC, PAL, or SECAM video signals to 8-bit ITU-R BT.656 format. Discrete syncs are also
available. All four channels of the TVP5154 are independently controllable. The decoders share one
crystal for all channels and for all supported standards. The TVP5154 can be programmed using a single
inter-integrated circuit (I
2
C) serial interface. The decoder uses a 1.8-V supply for its analog and digital
supplies, and a 3.3-V supply for its I/O. The optimized architecture of the TVP5154 decoder allows for low
power consumption. The decoder consumes less than 720 mW of power in typical operation.
Each channel of the TVP5154 is an independent video decoder with a programmable polymorphic scaler.
Each channel converts baseband analog video into digital YCbCr 4:2:2 component video, which can then
be scaled down to any resolution to 1/256 vertical and 15-bit horizontal in 2-pixel decrements. Composite
and S-video inputs are supported. Each channel includes one 9-bit analog-to-digital converter (ADC) with
2
×
sampling. Sampling is ITU-R BT.601 (27.0) MHz, generated from a single 14.31818-MHz crystal or
oscillator input) and is line locked. The output formats can be 8-bit 4:2:2 with discrete syncs or 8-bit ITU-R
BT.656 with embedded synchronization.
The TVP5154 utilizes Texas Instruments patented technology for locking to weak, noisy, or unstable
signals. A real-time control (RTC) output is generated for each channel for synchronizing downstream
video encoders.
Complementary 4-line adaptive comb filtering is available per channel for both the luma and chroma data
paths to reduce both cross-luma and cross-chroma artifacts. A chroma trap filter also is available.
An improved fast lock mode can be used when the input video standard is known and the signals on the
switching channels are clean. Note, switching from snow and/or noisy channels to good channels takes
longer. In fast lock mode, video lock is achieved in three fields or less.
Video
independently programmed for each channel using the industry standard I
2
C serial interface. The
TVP5154 generates synchronization, blanking, lock, and clock signals in addition to digital video outputs
for each channel. The TVP5154 includes methods for advanced vertical blanking interval (VBI) data
retrieval. The VBI data processor slices, parses, and performs error checking on teletext, closed caption,
and other data in several formats.
characteristics,
including
hue,
contrast,
brightness,
saturation,
and
sharpness,
may
be
I
2
C commands can be sent to one or more decoder cores simultaneously, reducing the amount of I
2
C
activity necessary to configure each core. A register controls which decoder core receives I
2
C commands,
and can be configured such that all four decoders receive commands at the same time.
The main blocks for each of the channels of the TVP5154 decoder include:
Robust sync detector
ADC with analog processor
Y/C separation using 4-line adaptive comb filter
Independent, concurrent scaler outputs
Chrominance processor
Luminance processor
Video clock/timing processor and power-down control
I
2
C interface
VBI data processor
Introduction
2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
TVP5157PNPR 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
TVP5158 制造商:TI 制造商全稱:Texas Instruments 功能描述:With Independent Scalers, Noise Reduction, Auto Contrast, and Flexible Output Formatter for Security and Other Multi-Channel Video Applications
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