TW8827
Ultra low cost, highly integrated LCD controller for analog LCD panels
Typical Diagram
Key Features
- Supports analog inputs including CVBS & S-Video signals and digital inputs including 18-bits RGB/YCbCr. Both interlaced and progressive ITU-656 and
ITU-601 formats are supported - Supports analog panel up to WQVGA resolutions
- Integrated 8-bit 8051 MCU, LED controller and CCFL controller Built-in 8 color font based OSD with ~200 ROM & 75 RAM fonts
- Embedded Image Enhancement
- Programmable CTI, hue, brightness, saturation, contrast & sharpness control
- Black/White Stretch
- Programmable favorite color enhancement- up to three colors (Skin, Grass & Sky)
- Programmable Gamma Correction table
- Analog Video Decoder
- NTSC (M, 4.34) and PAL (B, D, G, H, I, M, N, N combination), PAL (60), SECAM with automatic format detection
- Advanced synchronization processing for VCR trick play signal
- Two 10-bit ADCs and analog clamping circuit.
- Built-in analog anti-aliasing filter
- Fully programmable static gain or automatic gain control for the Y or CVBS channel
- Programmable white peak control for the Y or CVBS channel
- Software selectable analog inputs allows any of the following combinations:
- 2 composite video
- 1 S-Video
- 16bits Digital RGB/YCbCr Inputs
- Supports 18-bits RGB/YCbCr digital input
- Supports both interlaced and progressive ITU 656 source
- TFT Panel Support
- Supports a wide variety of Analog active matrix TFT panels
- Supports analog panel up to WQVGA (480 x 234)
- Font OSD
- Built-in OSD controller with integrated character ROM and programmable RAM font- 202 ROM & 75 RAM fonts
- Multi-window OSD support with color pallet
- Support OSD overlay with alpha blending
- Built-in Microcontroller
- Support external SPI Interface
- Support I2C Master interface with GPIO
- Support 2 LED signal interface with GPIO
- Support UART interface with GPIO
- Support IR or interrupt with GPIO
- LED Controller
- Boost-up DC and PWM Dimming Control
- Built-in Open LED Protection
- 1MHz fixed Switching Frequency
- Resistor-programmable LED Current
Description
The TW8827 is an ultra low cost, highly integrated LCD TFT flat panel controller supporting analog panels. To reduce BOM cost, TW8827 integrates a NTSC/PAL/SECAM video decoder supporting CBVS & S-Video inputs, an 8-bit MCU, a CCFL controller and a LED controller. The TW8827 integrates a high quality NTSC/PAL/SECAM 2D video decoder and a 2D De-interlacer/Scaler. In addition, 16-bit digital RGB/YCbCr inputs are supported through built-in digital interface.
Applications
- LCD Analog Displays
- Navigation + DVD + TV
- Back up Camera
- Rear Seat Entertainment
- Car TV
- Portable DVD
- PMP
- Portable TV
- Door Phone
- Photo Frame
- DMB TV Baby Monitor
- Home Audio
- In Flight Entertainment
