概要

The TW2964 is a low power NTSC/PAL video decoder chip that is designed for video surveillance applications. It consumes very low power in a typical composite input application. The available power down mode further reduces the power consumption. It uses the 1. 0V for digital supply voltage and 3. 3V for I/O and analog power. A single 27MHz crystal is all that needed to decode all analog video standards. The video decoder decodes the base-band analog CVBS into digital 8-bit 4:2:2 YCbCr for output. It consists of analog front-end with input source selection, variable gain amplifier and analog-to-digital converters, Y/C separation circuit, multi-standard color decoder (PAL BGHI, PAL M, PAL N, combination PAL N, NTSC M, NTSC 4. 43) and synchronization circuitry. The Y/C separation is done with high quality adaptive 4H (5-line) comb filter for reduced cross color and cross luminance. The advanced synchronization processing circuitry can produce stable pictures for non-standard signal as well as weak signal.

TW2964 Functional Diagram
TW2964 Functional Diagram
  • WD1 (960H) and D1 compatible video decoding operation and it is programmable each channel
  • NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N combination), PAL (60) support with automatic format detection
  • Software selectable analog inputs allows any of 2 CVBS per one video ADC
  • Built-in analog anti-alias filter
  • Four 10-bit ADCs and analog clamping circuit for CVBS input
  • Fully programmable static gain or automatic gain control for the Y channel
  • Programmable white peak control for CVBS channel
  • 4-H adaptive comb filter Y/C separation
  • PAL delay line for color phase error correction
  • Refer to the datasheet for the full list of features.

ドキュメント

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分類 タイトル 日時
データシート
TW2964 Datasheet
PDF 3.73 MB
Price Increase Notice
PIN19028 - Q3 Cy 19 Price Increase Notice
PDF 208 KB
製品変更通知
PCN15050 - Additional test facility of the Listed Intersil QFN and LQFP Packaged Products - King Yuan Electronics Corp. (KYEC) - Tong Luo, Taiwan.
PDF 74 KB
Product Advisory
PA14042 - Minimum Line Quantity Change
PDF 363 KB
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