tw8824

DATASHEET
To request the full datasheet, please visit www.intersil.com/products/TW8824
LCD Video Processor with Built-in Decoder, TTL Inputs,
BT.656 Output and LVDS Panel Interface
TW8824
Features
The TW8824 is a highly integrated LCD video processor that
incorporates many of the key 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, which supports both single-ended and differential
CVBS signals, a digital RGB input interface, high quality scaler
and deinterlacer, a Font OSD engine and LVDS, TTL or TCON
output panel interfaces. The TW8824 can support input
resolutions up to 1080p and can drive LCD panels at
resolutions up to 1366x768. The TW8824’s video processing
capability includes arbitrary H/V scaling, panoramic scaling,
image mirroring, image adjustment and enhancement, black
and white stretch, etc. This device can support fast boot
system requirements and provides stability and reliability to
the system due to the fact that it is a hardwired solution that
can sync to the video source and display an image on the LCD
in less than 0.5 seconds from start-up. The feature set and
versatility of this device makes it an ideal solution for in-car
LCD display applications.
Analog Video Decoder
Applications
• Digital horizontal PLL and advanced synchronization
processing for VCR playback and weak signal performance
• Automotive display systems
• High quality horizontal and vertical filtered down scaling
with arbitrary scale down ratio
• NTSC (M, 4.43) and PAL (B, D, G, H, I, M, N, N combination),
PAL (60), SECAM with automatic format detection
• 10-bit ADC and analog clamping circuit
• Fully programmable static gain or automatic gain control for
CVBS channel
• Programmable white peak control for the CVBS channel
• High quality adaptive 2D comb filter for both NTSC and PAL
inputs
• PAL delay line for color phase error correction
• Image enhancement with 2D dynamic peaking/CTI
• Digital sub-carrier PLL for accurate color decoding
• Programmable hue, brightness, saturation, contrast,
sharpness
• Selectable differential or single-ended CVBS input
• Up to 3-CH differential or 6-CH single-ended CVBS input
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM
February 26, 2015
FN8667.1
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TW8824
Features
Image Processing
(Continued)
Digital Inputs Support
• High quality scaler with both up/down and
panorama/water-glass scaling support
• Supports RGB 24-bit input up to 1080p resolution at either
1.8V or 3.3V logic level
• Built-in 2D de-interlacing function
• Supports both BT.656 and 601 video formats with H/VSYNC
• Programmable brightness, contrast, saturation, hue and
sharpness
TFT Panel Support
• Programmable color transient improvement control
• Built-in programmable timing controller
• Supports programmable cropping of input video and graphics
• Supports 3, 4, 6 or 8 bits per pixel up to 16.8 million colors
with built-in dithering engine
• Independent RGB gain and offset controls
• Supports digital panels (TTL) or single channel LVDS panels up
to WXGA (1366x768) resolution, 85MHz
• Programmable 8-bit Gamma correction for each color
• Supports serial (8-bit) RGB panel
• DTV hue adjustment
• Black/White Stretch
Clock Generation
Timing Controller (TCON)
• Supports programmable interface signals for control
• Spread spectrum profile based on triangular modulation with
center spread
• Column (source) driver/row (gate) driver
• Programmable modulation frequency and spread width
BT.656 Output
Miscellaneous
• Independent ITU-R 656 compatible YCbCr(4:2:2) output format
• Supports Fast Mode I2C interface up to 400Kbps
• ITU-R 656 output generated from decoder, DRGB and post
scaling path
• Max 148.5MHz with 3.3V, 74MHz with 1.8V
• Short Diagnostics:
- Short-to-battery
- Short-to-ground
Font Based On Screen Display
• Up to 3 PWM outputs
• Four window font OSD with bordering/shadow
• GPIOs
• 6912B programmable font RAM and 512 display RAM
• 1.8V internal operation
• 1/2/3/4 bits/pixel
• 1.8V/3.3V DTV input support
• Supports variable width (12/16), height (2~32)
• 1.8V/3.3V BT.656 output support
• Hardware mute pin
• Single 27MHz crystal
• 100 pin TQFP
• TW8824AT-TA1-GR is AEC-Q100 qualified
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