TECHWELL
DISPLAY
Automotive Display ICs
TW8823
Advanced LCD controller with on-chip MCU
and 65K color 16-bit OSD support
The TW8823 is a highly integrated advanced LCD controller designed for the automotive infotainment market, targeting
center console and rear seat entertainment applications. Features such as an embedded MCU, LED/CCFL backlight controllers,
a 4-wire touch screen controller, analog and digital TCON, and a multi-window 16-bit (65K color) bit-map OSD are designed
to reduce the system’s overall BOM cost. The TW8823 has multiple analog and digital inputs to support a wide array of video
and graphic sources, including navigation modules, back-up cameras, DVD/multimedia modules, PCs, etc. The TW8823 can
support a wide variety of both digital & analog LCD panels with resolutions up to WXGA, and also has an integrated single
channel LVDS interface to directly drive LVDS based LCD panels.
Key Features
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Supports analog inputs including CVBS, S-Video & Analog RGB/YPbPr
Dual channel digital inputs support with following combinations:
• 1 channel 18/16-bit inputs and 1 channel 8-bit inputs
• 1 channel 24 bit digital RGB/YCbCr inputs
Integrated 8052 MCU with on-chip cache and SPI DMA support for Read/Write to OSD memory
16-bit (65K colors)/8-bit (256 colors) based bit-map OSD support. External 18-bit OSD supported with alpha blending control
Embedded image enhancement functions:
• Programmable CTI, hue, brightness, saturation, contrast and sharpness control
• Black/White stretch
• Programmable favorite color enhancement- up to three colors (Skin, Grass and Sky)
• Programmable Gamma Correction tables
TW8823 Functional Block Diagram
www.intersil.com
Automotive Display ICs
Advanced LCD controller with on-chip MCU
and 65K color 16-bit OSD support
TW8823
Analog Video Decoder
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NTSC (M, 4.34) and PAL (B, D, G, H, I, M, N, N combination), PAL
(60), SECAM with automatic format detection
Two 10-bit ADCs and analog clamping circuit
Software selectable analog inputs allows either composite or
S-video input
High quality motion adaptive 3D comb filter for both NTSC
and PAL with concurrent 3D noise reduction
Digital horizontal PLL and advanced synchronization
processing for VCR playback and weak signal performance
Programmable hue, brightness, saturation, contrast,
sharpness
On Screen Display
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Supports three window bit-mapped OSD, one 16-bit (65K
colors) and two 8-bit (256 colors) bit-mapped OSD windows
• Built-in OSD controller with Bit Blit Engine
• Supports variety functions included like blinking,
transparency and blending
• Supports External OSD with external alpha blending control
• Supports OSD compression
Image Processing
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High quality scaler with both up and down scaling support
Built-in 2D de-interlacer
Programmable hue, brightness, saturation, contrast and
sharpness
Panorama/Water-glass scaling
Programmable 10-bit Gamma correction for each color
Black/White Stretch
Programmable favorite color enhancement
Analog RGB Inputs
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Triple high speed 10-bit ADCs
Built-in line locked PLL with sync separator
Supports analog input resolution up to 1080i or WXGA
Dual Digital Inputs Support
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Dual channel digital inputs support with following
combinations:
• 1 channel 18/16-bit inputs and 1 channel 8-bit inputs
• 1 channel 24-bit digital RGB/YCbCr inputs
Supports both 656 and 601 video formats
PIP Function
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Two independent PIP engines
Supports both 16-bit YPbPr and RGB data format
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Host Interface
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Supports 2-wire serial bus interface
Supports 8-bit Parallel Host Interface
Built-in Microcontroller
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Built-in 8052 MCU up to 72MHz clock
Built-in code cache memory to enhance CPU performance
Supports Single/Dual/Quad IO SPI Flash
System programming through UART
Supports SPI DMA Read/Write to OSD memory
Supports IR receiver and interrupt output
Power Management
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Supports Panel power sequencing
Supports DPMS for monitor power management
• 1.8V / 2.5V / 3.3V operation
TFT Panel Support
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Built-in analog and digital TCON with programmability
• Support for both digital & analog LCD panels with
resolutions up to WXGA
• Integrated single channel LVDS interface to directly drive
LVDS based LCD panels
Miscellaneous
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Built-in single CCFL and LED backlight controller
Built-in Touch screen controller with 12-bit ADC
LVR, provides 100~200 msec. low voltage reset
Power-down mode
Single 27MHz crystal
Memory Support
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Integrated 16-bit DDR memory controller supporting DDR-
SDRAM up to 256Mb
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the property of the respective trademark owners.
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