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TFT Display Controller
TW8832, TW8832S
Description
The TW8832 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, and
images enhancement functions, which include Black
and White Stretch, etc. It also supports panoramic
scaling for conversion to wide screen display. On the
input side, it supports a rich combination of CVBS, S-
video, analog RGB as well as digital inputs. On the
output side, it supports a variety of digital panel types
with its built-in timing controller.
Applications
In-car display controller
Portable DVD and DVRs players
Portable media player
Features
Analog Video Decoder
NTSC (M, 4.34) 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
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
Programmable hue, brightness, saturation, contrast
and 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
Support analog input resolution up to 1080i or
WXGA
Digital Inputs Support
Support 656 video formats
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
Support digital panel up to WVGA/SVGA resolution
Support Serial (8-bit) RGB panel
On Screen Display
256 programmable font RAM and 384 display RAM
Four windows font OSD with bordering / shadow
Supports bit-mapped based OSD through SPI
(TW8832S only)
Image Processing
High quality scaler with both up/down and
nonlinear scaling support
Built-in 2D de-interlacing function
Programmable hue, brightness, saturation, contrast
and sharpness
Supports programmable cropping of input video
and graphics
Independent RGB gain and offset controls
Panorama/Water-glass scaling
Programmable 10-bit Gamma correction for each
color
Operated in Frame Sync mode
Black/White Stretch
Clock Generation
Spread spectrum clock
Modulation frequency and spread width are
selectable
