TW9992

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Low Power NTSC/PAL Video Decoder with Differential CVBS Inputs and MIPI-CSI2 Output Interface

OVERVIEW

The TW9992 is a low power NTSC/PAL analog video decoder that is designed for automotive applications. It supports single-ended, differential and pseudo differential composite video inputs. Integrated short-to-battery and short-to-ground detection, advanced image enhancement capabilities such as the programmable Automatic Contrast Adjustment (ACA) and the MIPI-CSI2 output interface make the TW9992 an ideal solution for demanding automotive camera applications.

KEY FEATURES

    Analog Video Decoder
  • Software selectable analog input control allows for combinations of single-ended CVBS, and differential CVBS
  • Built-in analog anti-alias filter
  • Two 10-bit ADCs and analog clamping circuit
  • Fully programmable static gain or automatic gain control for the Y channel
  • Programmable white peak control for the Y channel
  • 4-H adaptive comb filter Y/C separation
  • PAL delay line for color phase error correction
  • Digital subcarrier PLL for accurate color decoding
  • Digital horizontal PLL for synchronization processing and pixel sampling
  • Advanced synchronization processing and sync detection for handling nonstandard and weak signal
  • Automatic color control and color killer
  • Chroma IF compensation
  • VBI slicer supporting industrial standard data services
  • VBI data passthrough, raw ADC data output
  • Programmable output cropping

    Video Processing
  • Automatic Contrast Adjustment (ACA)
  • RGB565
  • Programmable hue, brightness, saturation, contrast and sharpness.
  • Image enhancement with peaking and CTI

    MIPI Output
  • MIPI 1.1 compliant unidirectional output format
  • YUV 422 or RGB565 output format

    Digital Output
  • Output voltage 1.8V to 3.3V with 3.3V tolerance

    Miscellaneous
  • Low power consumption: 100mW typical
  • Power save and Power-down mode
  • Short-to-battery detection test
  • Short-to-ground detection test
  • Two-wire MPU serial bus interface
  • Supports real time control interface
  • Single 27MHz crystal for all operations
  • Supports 24.54MHz and 29.5MHz crystal for high resolution square pixel format decoding
  • 3.3V tolerant I/O
  • 1.8V/3.3V power supply
  • 32 Ld QFN (WQFN with wettable flanks)
  • TW9992AT-NA1-GE is AEC-Q100

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
TW9992
Basic Information
Production Status
Mass Production
# of Inputs
8
# of Channels/Device
1
Resolution (Bits)
D1
Video DAC
No
Comb Filter
2D
Bus/Output Interface
MIPI-CSI2 v1.1
Analog Output
No
Qualification Level
Automotive
Function
Video Decoder
Temperature Range
-40 to +105

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