參數(shù)資料
型號(hào)： TVP5020TQFP
廠商： Texas Instruments, Inc.
英文描述： NTSC/PAL VIDEO DECODER
中文描述： NTSC / PAL視頻解碼器
文件頁(yè)數(shù)： 9/87頁(yè)
文件大?。?/td> 387K
代理商： TVP5020TQFP
1–1
1 Introduction
The TVP5020 is a high-quality single-chip digital video decoder that converts base-band analog NTSC and
PAL video signals into digital component video. Sampling is square-pixel or ITU-R BT.601 (13.5 MHz) and
is line-locked for correct pixel alignment. The output formats can be 8-bit or 16-bit 4:2:2, 12-bit 4:1:1, or 8-bit
ITU-R BT.656. The TVP5020 uses TI patented technology for locking to weak, noisy, or unstable signals.
A genlock control output is generated for synchronizing downstream video encoders.
Two-line (1-H delay) comb filtering is available for both the luma and chroma data paths to reduce both
cross-luma and cross-chroma artifacts; a chroma trap filter is also available. Video characteristics including
hue, contrast, and saturation are programmable using one of five supported host port interfaces. The
TVP5020 generates synchronization, blanking, field, lock, and clock signals in addition to digital video
outputs.
The TVP5020 includes advanced vertical blanking interval (VBI) data retrieval. The VBI data processor
slices, parses, and performs error checking on teletext data in several formats. A built-in FIFO stores up to
14 lines of teletext data and, with proper host port synchronization, full-field teletext retrieval is possible. The
VBI data processor also retrieves closed-caption data.
The main blocks of TVP5020 include:
Analog processors and A/D converter
Y/C separation
Chrominance processor
Luminance processor
Clock/Timing processor and power-down control
Output formatter
Host port interface
VBI data processor
Features
NTSC (M) and PAL (B, D, G, H, I, M, N) composite video
Two analog video inputs for up to two composite inputs
Single built-in-analog signal processing channels with clamping and AGC
Single high speed 8-bit A/D converter
1.1
Patented architecture for locking to weak, noisy, or unstable signals
Comb filters for both cross-color and cross-luminance noise reductions
Line locked clock and sampling
Programmable data rates:
–
12.2727 MHz square-pixel (NTSC)
–
14.7500 MHz square-pixel (PAL)
–
13.5 MHz ITU-R BT.601 (NTSC and PAL)
Programmable output formats: 16-bit or 8-bit 4:2:2 YCbCr, 12-Bit 4:1:1 YCbCr and ITU-R BT.656
with embedded syncs
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