LCD Video Processor with Built-in Decoder, MCU, OSD,
TCON and Analog RGB Input Support
TW8835
The TW8835 incorporates many of the features
required to create multi-purpose in-car LCD display
system in a single package. It integrates a high quality
2D comb NTSC/PAL/SECAM video decoder, triple high
speed RGB ADCs, high quality scaler, versatile OSD, and
high performance MCU. Its image video processing
capability includes arbitrary scaling, panoramic scaling,
image mirroring, image adjustment and enhancement,
Black and White Stretch, etc. On the input side, it
supports a rich combination of CVBS, S-video,
component video, analog RGB as well as digital
YCbCr/RGB inputs. On the output side, it supports a
variety of digital panel types with its built-in timing
controller. The integration of additional touch screen
controller, LED driver controller, PWM and MCU makes
this a versatile solution for many portable applications.
Programmable hue, brightness, saturation, contrast,
sharpness
High quality horizontal and vertical filtered down
scaling with arbitrary scale down ratio
Analog RGB Inputs
Triple high speed 10-bit ADCs with clamping and
programmable gain amplifier
SOG and H/V sync support for YPbPr or RGB input
Built-in line locked PLL with sync separator
Supports input resolution up to 1080p
Digital Inputs Support
Supports both BT656 and 601 video formats
Supports YCbCr/RGB 24-bit input
Supports RGB 565 + BT 656 at the same time
Supports input resolution up to 1080p
Applications
In-car display
Portable DVD and DVRs players
Portable media player
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 allows composite,
S-video, analog YPbPr or RGB
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 and
CTI.
Digital sub-carrier PLL for accurate color decoding
Digital horizontal PLL and Advanced synchronization
processing for VCR playback and weak signal
performance
1
FN7864.2
May 6, 2014
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 panel up to XGA resolution
Supports Serial (8-bit) RGB panel
Font Based On Screen Display
Four window font OSD with bordering / shadow
10KB programmable font RAM and 512 display RAM
1/2/3/4 bits/pixel
Supports variable width (12/16), height (2~32)
SPI Flash Based On Screen Display
Nine bitmap based OSD windows through SPI
Supports 4/6/8 bits/pixel
Supports RLE decompression for one window
Supports overlapping between windows
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Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
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TW8835
TW8835 Functional Block Diagram
SPI
Flat Panel Out
YIN0~2
CIN0~1
VIN0~1
2D-
Comb
Video
Decoder
Input
Controller
SPI
OSD
MCU
TCON
Font OSD
TCON signals
Serial Data
BT656 Output
DTVCLK
DTVHS, VS
DTVDE
DTVD[23:0]
Triple
ADCs
Scaler/
Image
Enhance
Output
Formatter
LED/
VCOM
Control
2
-Wire
DTV
I/F
Serial
Bus
I2C_SDAT
I2C_SCLK
For additional products, see
www.intersil.com/product_tree
Intersil products are manufactured, assembled and tested utilizing ISO9001 or TS16949 quality systems as applicable
noted in the quality certifications found at
http://www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any
time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is
believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or
other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its
subsidiaries.
For information regarding Intersil Corporation and its products, see
http://www.intersil.com
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