TW8836

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LCD Video Processor with Decoder, Triple ADCs, LVDS and TTL Input, MCU, OSD, TCON and LVDS Interface

Product Status: Mass Production

OVERVIEW

The TW8836 is a highly integrated LCD video processor that incorporates many of the features required to create a multipurpose LCD display system into a single package. This includes a high quality, 2D comb NTSC/PAL/SECAM video decoder, triple high-speed RGB ADCs, an LVDS and TTL digital input interface,a high-quality scaler and deinterlacer, and a versatile OSD, with a high-performance output panel interface for MCU and LVDS or TTL. The TW8836 can support input resolutions up to 1080p and can drive LCD panels at resolutions up to 1366 x768. The TW8836’s video processing capability includes arbitrary H/V scaling, panoramic scaling, image mirroring, image adjustment and enhancement, and black and white stretch. The feature set and versatility of this device makes it an ideal solution for in-car LCD display applications and portable display applications such as pico projectors.

KEY FEATURES

    Analog Video Decoder

    • NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N combination), PAL (60), SECAM with automatic format detection
    • Three 10-bit ADCs and analog clamping circuit
    • 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 allow composite, S-video, analog YPbPr, or RGB
    • High quality adaptive 2D comb filter for NTSC/PAL inputs
    • PAL delay line for color phase error correction
    • Image enhancement with 2D dynamic peaking/CTI
    • Digital subcarrier PLL for accurate color decoding
    • Programmable hue, brightness, saturation, contrast, sharpness
    • Selectable differential or single-ended CVBS input
    • Digital horizontal PLL and advanced synchronization processing for VCR playback and weak signal performance
    • High quality horizontal and vertical filtered-down scaling with arbitrary scale-down ratio
    • Up to 2CH differential or 4CH single-ended CVBS input
    • Supports detection of Macrovision copy protection

    Analog RGB Inputs

    • Triple high-speed 10-bit ADCs with clamping and programmable gain amplifier
    • SOG and H/VSYNC support for YPbPr or RGB input
    • Built-in line locked PLL with sync separator
    • Supports input resolutions VGA (25MHz) to 1080p (150MHz)

    Digital Inputs Support

    • Supports both BT.656 and 601 video formats
    • Supports YCbCr/RGB 24-bit, VGA (25MHz) to 1080p (150MHz) resolution
    • Single channel LVDS input, from VGA (25 MHz) up to 720p (75 MHz) resolution
    • Supports RGB 565 + BT.656 at the same time

    TFT Panel Support

    • Built-in programmable timing controller
    • Supports 3, 4, 6, or 8 bits per pixel up to 16.8 million colors with built-in dithering engine
    • Supports digital panels (TTL) or single channel LVDS panels up to WXGA (1366 x768) resolution, 85MHz
    • Supports serial (8-bit) RGB panel

    Font Based On-Screen Display

    • Eight window font OSD with bordering/shadow
    • 10kB programmable font RAM and 512 display RAM
    • 1/2/3/4 bits/pixels
    • Supports variable width (12/16), height (2~32)

    SPI Flash Based On-Screen Display

    • Nine bitmap based OSD windows in two layers through SPI with alpha blending between layers
    • Supports 4/6/8 bits/pixels
    • Supports RLE decompression for two windows

    Image Processing

    • High quality scaler with both up/down and panorama/water-glass scaling support
    • Built-in 2D deinterlacing function
    • Programmable brightness, contrast, saturation, hue, and sharpness
    • Programmable color transient improvement control
    • Supports programmable cropping of input video and graphics
    • Independent RGB gain and offset controls
    • DTV hue adjustment
    • Programmable 8-bit gamma correction for each color
    • Black/white stretch

    Clock Generation

    • Spread spectrum profile based on triangular modulation with center spread
    • Programmable modulation frequency and spread width

    Timing Controller (TCON)

    • Supports programmable interface signals for control
    • Column (source) driver/row (gate) driver

    MCU

    • Industry standard 8052 based
    • Code fetch from external SPI flash memory
    • 256B code cache
    • 2k XDATA memory
    • Supports power save mode with 32k internal clock
    • ISP (In System Programming) through I2C
    • Supports 24-bit addressing

PARAMETRICS

Parameters
TW8836
Basic Information
Production Status
Mass Production
CVBS Input
Yes
S-Video Input
Yes
YPbPr Input
Yes
SCART Input
No
Analog RGB Input
Yes
Digital RGB/Y CbCr Input
24 bit
ADC Input Frequency (MHz)
148
Comb Filter
2D
Max Output Resolution
WXGA (1366x768)
Qualification Level
AEC-Q100 Grade 2
De-Interlacer
2D
Color Enhancement
Yes
PIP
No
OSD Type
Font / SPI bitmap
OSD Font ROM
N/A
OSD Font RAM
379
External OSD
No
OSD Colors
16 Colors / 16-bit Pallette
TCON Output
Digital
Dual View Output
No
LVDS Input
Yes
LVDS Output
Yes
TTL Output
Yes
Memory Support
No
MCU
Integrated
CCFL/LED Controller
No
Touch-screen Controller
Yes
Temperature Range
-40 to +105

Related Videos

3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.
3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.
3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.

Featured Design Resources


Key Differences in TW884x Family

Product Input Types ADC
Input
Freq.
(MHz)
Max
Output
Resolution
Panel
Output
SoC
Output
Pkg
Type
Technical
Highlights
CVBS Comb
Filter
S-Video Analog
RGB/YPbPr
Digital
RGB/YCbCr
LVDS
Open LDI
TW8844 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
MIPI-CSI2
v1.1
156 Ld LQFP 1080p panel support + MIPI-CSI2 output path, improved frozen detection
TW8845 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
Pseudo
BT.656
156 Ld LQFP 1080p panel support + BT656 output path, improved frozen detection
TW8836 Yes* 4H Yes Yes (1080p) Yes
24-bit
Yes
1CH
148 WXGA/720p
1366x768
TTL/TCON
1CH LVDS
Pseudo
BT.656
128 Ld LQFP 720p panel support with LVDS I/O

*Differential Supported