Document
MST720A/MST720A-A Small Size LCD TV Processor with Video Decoder Preliminary Data Sheet Version 0.3
Doc. No.: 2006050041
FEATURES
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Video Decoder Ÿ Supports NTSC and PAL video input formats Ÿ 2D NTSC and PAL comb-filter for Y/C separation of CVBS input Ÿ Single CVBS and S-video input Ÿ Supports Closed-caption and V-chip Ÿ ACC, AGC, and DCGC (Digital Chroma Gain Control)
Ÿ Programmable startup operating frequency and period with output voltage regulation Ÿ Programmable output current regulation; 40KHz~70KHz switching frequency, sync. to HSYNC possible Ÿ Burst-mode or continuous-mode for output current regulation; 150Hz~300Hz burst-mode frequency, sync. to VSYNC possible Ÿ Programmable protection level for input voltage and fault detection
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Color Engine Ÿ Brightness, contrast, saturation, and hue adjustment Ÿ 9-tap programmable multi-purpose FIR (Finite Impulse Response) filter Ÿ Differential 3-band peaking engine Ÿ Luminance Transient Improvement (LTI) Ÿ Chrominance Transient Improvement (CTI) Ÿ Black Level Extension (BLE) Ÿ White Level Extension (WLE) Ÿ Favor Color Compensation (FCC) Ÿ 3-channel gamma curve adjustment
Miscellaneous Ÿ Built-in MCU Ÿ 3-wire serial bus interface for configuration setup Ÿ Built-in step-down PWM circuits for input 2.5V Ÿ Built-in VCOM DC level adjusting circuits Ÿ Built-in internal OSD with 256 programmable fonts, 16-color palettes, and 12-bit color resolution Ÿ 3-channel low-power 8-bit DAC integration for RGB output, dynamic range 0.1-4.9V Ÿ Built-in VCOM DC/AC level adjustment circuit Ÿ Spread spectrum clocks Ÿ Optional 3.3V / 5V output pads with programmable driving current Ÿ 100-pin LQFP package
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Scaling Engine/TCON Ÿ Supports analog panels with the resolution of 960x234, 1200x234, 1400x234, and more Ÿ Supports various displaying modes Ÿ Supports horizontal panorama scaling
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Digital PWM Controller Ÿ Integrated general purpose digital PWM control loop
Doc. No.: 2006050041
-1Copyright © 2006 MStar Semiconductor, Inc. All rights reserved.
3/16/2006
MST720A/MST720A-A Small Size LCD TV Processor with Video Decoder Preliminary Data Sheet Version 0.3
Doc. No.: 2006050041
BLOCK DIAGRAM
CVBS S-Video SY/CVBS Switch SC 2-Channel AFE Video Decoder Timing Generator YC Separation 2D Comb Filter Chroma Demodulator
M U X
3x3 Color Space Conversion
MACE
Scaling Engine
CSC (RGB to YCbCr)
OSD
Gamma
Display Unit
TCON
Display Device
MCU
BIU
DPWM Controller
DPWM Output
Flash Memory or EEPROM
External MCU
Feedback Voltage
SYSTEM APPLICATION DIAGRAM
Flash / ROM 2.5V Power Supply
MicroController
PWM Step-Down
DPWM Controller
Y/CVBS1 C/CVBS2
Video Decoder
TCON
To Analog Panel
Deinterlacer / Scaler
RGB Amplifer
Doc. No.: 2006050041
-2Copyright © 2006 MStar Semiconductor, Inc. All rights reserved.
3/16/2006
MST720A/MST720A-A Small Size LCD TV Processor with Video Decoder Preliminary Data Sheet Version 0.3
Doc. No.: 2006050041
GENERAL DESCRIPTION
The MST720A is a high quality ASIC for NTSC/P.