DATA SHORT
To request the full datasheet, please visit
www.intersil.com/products/tw8844
TW8844, TW8845
LCD Video Processor with Built-In Decoder, LVDS and TTL Inputs, OSD,
TCON, LVDS, and MIPI Interface
The
TW8844
and
TW8845
are highly integrated LCD
video processors that incorporate many of the features
required to create a multipurpose LCD display system.
This includes a high quality 2D comb
NTSC/PAL/SECAM video decoder that supports
single-ended or differential composite video inputs, two
independent TTL digital input interfaces (up to 24-bit
each), two LVDS Open LDI input interfaces, two
separate high quality scaler and deinterlacer engines, as
well as a versatile OSD and EEPROM interface. The
outputs include dual channel LVDS Open LDI, or TTL
panel interfaces, as well as a separate MIPI-CSI2
(TW8844) or pseudo BT.656 (TW8845) output. The
TW8844 and TW8845 can support input resolutions up
to 1080p and can drive LCD panels at resolutions up
1920x1080. The TW8844 and TW8845's video
processing capability includes arbitrary H/V scaling,
panoramic scaling, image mirroring, image adjustment
and enhancement, Automatic Contrast Adjustment, etc.
In addition, the TW8844 and TW8845 have new image
diagnostic capabilities to determine if the input video is
corrupted. The feature set and versatility of this device
makes it an ideal solution for Automotive LCD display
applications.
FN8934
Rev.3.00
Aug 2, 2017
Features
Analog Video Decoder
• Supports NTSC (M, 4.43) and PAL (B, D, G, H, I, M,
N, N combination), PAL (60), SECAM with
automatic format detection
• High quality adaptive 2D comb filter for both NTSC
and PAL inputs
• 10-bit ADC and analog clamping circuit (clamping is
8-bit processing)
• Fully programmable static gain or automatic gain
control for the CVBS channel
• Programmable white peak control for the CVBS
channel
• Selectable single-ended or differential CVBS 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
• Digital horizontal PLL and advanced synchronization
processing for superior VCR playback and weak
signal performance
• Up to 3CH differential or 6CH single-ended CVBS
input
Digital Input Support
• Supports BT.656, 8-bit and 16-bit BT.601 and
BT.1120 video formats
• Supports YCbCr/RGB 24-bit input up to 1080p
resolution
• Two single channel LVDS open LDI inputs - up to
104MHz for each channel
• Dual channel LVDS open LDI input - up to 150MHz
in Dual mode (75MHz per channel)
• Supports RGB565 + BT.656 at the same time
Applications
• Automotive display
• Industrial/military displays
• Portable/consumer displays
Related Literature
• For a full list of related documents, visit our website
TW8844
and
TW8845
product pages
FN8934 Rev.3.00
Aug 2, 2017
Page 1 of 4
TW8844, TW8845
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 single channel LVDS panels up to 1920x720 resolution (104MHz)
• Supports dual channel LVDS and digital panels (TTL) up to 1920x1080 resolution (150MHz)
Font Based On-Screen Display
• 4 windows font OSD with bordering/shadow
• 13,824 Bytes programmable font RAM and 1024 characters display RAM
• 1/2/3/4 bits per pixel
• Supports variable width (12/16), height (2~32)
SPI Flash Based On-Screen Display
• Supports fast register initialization by SPI-DMA
• 9 bitmap-based OSD windows in 2 layers through SPI with alpha blending between layers
• Supports 4/6/8 bits/pixel
• Supports RLE decompression for two windows
• Shares pins with EEPROM interface
EEPROM Interface
• EEPROM interface for fast boot register initialization
• Shares pins with SPI Flash memory interface
Image Processing
• Two high quality scalers with both up/down scaling support
• Built-in 2D deinterlacing function
• Supports programmable cropping of input video and graphics
• Automatic Contrast Adjustment (ACA) on 1 scaler path
• Independent RGB gain and offset controls
• 10-bit image enhancement processing and 10-bit Gamma correction
Clock Generation
• Spread spectrum PLL integrated to each scaler path
• Programmable modulation frequency and spread width
Timing Controller (TCON)
• Supports programmable interface signals for control
• Column (source) driver/Row (gate) driver
MIPI-CSI2 Output – TW8844 only
• 4 lane MIPI-CSI2 output port (1Gb/lane)
• Supports YUV422 and 24-bit RGB data formats
Pseudo BT.656 Output – TW8845 only
• Independent BT.656 compatible YCbCr(4:2:2) output format
• YCbCr(4:2:2) output generated from all input paths
• Output can be processed through the scaler path or bypass scaling all together
FN8934 Rev.3.00
Aug 2, 2017
Page 2 of 4
TW8844, TW8845
© Copyright Intersil Americas LLC 2017. All Rights Reserved.
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For additional products, see
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Intersil products are manufactured, assembled and tested utilizing ISO9001 or TS16949 quality systems as applicable
noted in the quality certifications found at
www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice,
provided that such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned
to verify that datasheets 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
www.intersil.com
FN8934 Rev.3.00
Aug 2, 2017
Page 4 of 4
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