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Número de pieza | TW8811 | |
Descripción | TFT Flat Panel Controller | |
Fabricantes | TECHWELL | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de TW8811 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
No Preview Available ! TW8811 -- TFT Flat Panel Controller
with built-in 3D Video Decoder, TripleADCs, and PIP Support
Preliminary Data Sheet from Techwell, Inc.
Information may change without notice
Disclaimer
This document provides technical information for the user. Techwell Inc. reserves the right to modify the
information in this document as necessary. The customer should make sure that they have the most recent data
sheet version. Techwell Inc. holds no responsibility for any errors that may appear in this document. Customers
should take appropriate action to ensure their use of the products does not infringe upon any patents. Techwell
Inc. respects valid patent rights of third parties and does not infringe upon or assist others to infringe upon such
rights.
TECHWELL, INC.
1
REV C
02/07/2008
1 page TW8811 – TFT FLAT PANEL CONTROLLER
− Built-in programmable timing controller
On Screen Display
− Supports dual window bitmapped OSD.
− Built-in OSD controller with BitBlit Engine
− Supports variety functions included like blinking, transparency
and blending.
− Supports External 16-bit OSD with external alpha blending
control.
− Support OSD compression
Image Processing
− Built-in 2D de-interlacing engine with proprietary low angle
compensation circuit for smooth video rendering.
− Built-in high quality scaler with nonlinear scaling support
− Programmable hue, brightness, saturation, contrast
− Sharpness control with vertical peaking up to +12db
− Programmable color transient improvement control
− Supports programmable cropping of input video and graphics.
− Independent RGB gain and offset controls
− Panorama / Water-glass scaling
− DTV hue adjustment
− Programmable 10-bit Gamma correction for each color
− Operated in Frame Sync mode only
− Black/White Stretch
− Programmable favorite color enhancement
PIP Function
− PIP with variable sub window size
− POP
PRELIMINARY
− Multiple PIP support
− Built-in high quality down scaling engine for PIP
SDRAM
− Support 16bits Bus width SDRAM
Host Interface
− Supports 2-wire serial bus interface
− Supports 8Bits Parallel Host Interface
− Support DMA transfer
Clock Generation
− Frequency synthesizer with spread spectrum generate memory
and display clocks
− Spread spectrum profile based on triangular modulation with
center spread
− Modulation frequency and spread width can be selectable
Power Management
− Supports Panel power sequencing.
− Supports DPMS for monitor power management.
− 1.8 / 3.3 V operation
Miscellaneous
− Built-in single CCFL back light controller
− Built-in single LED back light controller
− Power-down mode
− Single 27MHz crystal
− 208-pin PQFP package
TECHWELL, INC.
5
REV C
02/07/2008
5 Page TW8811 – TFT FLAT PANEL CONTROLLER
PRELIMINARY
oscillation of the color killer operation. This function can be disabled by programming a low threshold
value.
Automatic standard detection
The TW8811 has build-in automatic standard discrimination circuitry. The circuit uses burst-phase, burst-
frequency and frame rate to identify NTSC, PAL or SECAM color signals. The standards that can be
identified are NTSC (M), NTSC (4.43), PAL (B, D, G, H, I), PAL (M), PAL (N), PAL (60) and SECAM (M).
Each standard can be included or excluded in the standard recognition process by software control. The
identified standard is indicated by the Standard Selection (SDT) register. Automatic standard detection
can be overridden by software controlled standard selection.
Video Format support
TW8811 supports all common video formats as shown in Table 1. The video decoder needs to be
programmed appropriately for each of the composite video input formats.
Table 1. Video Input Formats Supported by the TW8811
Format
NTSC-M
NTSC-Japan (1)
PAL-B, G, N
PAL-D
PAL-H
PAL-I
PAL-M
PAL-CN
SECAM
Lines
525
525
625
625
625
625
525
625
625
Fields
60
60
50
50
50
50
60
50
50
PAL-60
NTSC (4.43)
525 60
525 60
Notes: (1). NTSC-Japan has 0 IRE setup.
Fsc
3.58 MHz
3.58 MHz
4.43 MHz
4.43 MHz
4.43 MHz
4.43 MHz
3.58 MHz
3.58 MHz
4.406MHz
4.250MHz
4.43 MHz
4.43 MHz
Country
U.S., many others
Japan
Many
China
Belgium
Great Britain, others
Brazil
Argentina
France, Eastern Europe,
Middle East, Russia
China
Transcoding
Component Processing
Luminance Processing
The TW8811 decoder adjusts brightness by adding a programmable value (in register BRIGHTNESS) to
the Y signal. It adjusts the picture contrast by changing the gain (in register CONTRAST) of the Y signal.
The TW8811 decoder also provides a sharpness control function through a control register. The center
frequency of the peaking filter is selectable. A coring function is provided along with the sharpness control
to reduce enhancement to the noise.
The Hue and Saturation
When decoding NTSC signals, TW8811 decoder can adjust the hue of the chroma signal. The hue is
defined as a phase shift of the subcarrier with respect to the burst. This phase shift can be programmed
through a control register.
The color saturation can be adjusted by changing the gain of Cb and Cr signals for all NTSC, PAL and
SECAM formats. The Cb and Cr gain can be adjusted independently for flexibility.
TECHWELL, INC.
11
REV C
02/07/2008
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet TW8811.PDF ] |
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