本文详细介绍了宏晶微电子的MS1820转换芯片，该芯片能实现YPbPr、VGA及TTL信号之间的相互转换，满足不同视频接口的需求。通过Function Block Diagram，读者可以了解其内部工作原理和应用方案。
General Description
The MS1820 is a multi-functions video processor chip. It consists of 10-bit triple-ADC module, TV encoder module, 10-bit triple-DAC module and embedded OSD function. It can receive interlaced or progressive video input and graphic input. It is capable of advanced de-interlacing, video enhancement, 3D noise reduction, Y/C cross talk suppression and frame rate conversion.
Features
Analog Input
10-bit triple-ADC
Maximum analog sampling rate up to 165MSPS
Supports analog input range: 0.45V ~ 1.1V (P-P)
Up to three analog input channels
3 to 1 input mux
Supports RGBHV/RGBS/YCbCr/YPbPr input
Auto offset/phase adjustment
Supports Sync-on-Green(SOG) and Composite-sync
Supports input resolution up to 1080P
Supports macrovision input
Flexible Digital Video Input
Supports 24-bit RGB/YUV digital input
Supports 16-bit YUV 4:2:2 input
Supports 8-bit BT656, 601 input
Supports 8-bit BT1120 input
Supports interlace and progressive SD input
Supports 720P, 1080I, 1080P HD input
Supports VGA input up to UXGA
Auto-mode Detection Auto Position (Blank) Detection
Frame Rate Conversion
Independent horizontal and vertical scaling
Frame rate conversion
External Memory Controller
Supports 2/8MByte memory size
16/32-bit data access
Memory bus speed up to 162MHz
De-interlacing
Supports HD1080I to1080P conversion
Supports SD NTSC/PAL to 480P/576P conversion
Edge correction de-interlacing
4-field motion adaptive de-interlacing for SD and 3-field for HD
Global noise reduction
3:2/2:2 pull-down detection
Video Enhancement
Black/white level expansion
Color transition improvement
Dynamic peaking
Dynamic range expansion
Brightness, saturation, contrast and hue adjustable
2 sets primary color enhancement
Blue stretch
Embedded OSD
Supports 1/2/4-bit DRCS character mode
Shadowing, transparency and blinking
Block double width and height
Zoom out
One OSD window with alpha-blending
Output Formatter
10-bit triple-DAC for component video output
Analog VGA or YPbPr output
Video encoder
50~75Hz scan rate conversion
15~75KHz horizontal frequency
16-bit YUV 4:2:2 digital output with sync
24-bit YUV/RGB 4:4:4 digital output with LCD panel compatible sync
VGA output resolution up to UXGA
Video outputs: 480I, 480P, 576I, 576P, 720P, 1080I, 1080P
2-wire I2C Slave Interface
Package
LQFP-176 plastic (20mm×20mm)
PB-free and RoHS compliant
Applications
LCD Controller
Video Converter/ Set-Top-Box
Car Infotainment Device
Portable/ Desktop Visualizer
Industrial Camera
The MS1820 is a multi-functions video processor chip. It consists of 10-bit triple-ADC module, TV encoder module, 10-bit triple-DAC module and embedded OSD function. It can receive interlaced or progressive video input and graphic input. It is capable of advanced de-interlacing, video enhancement, 3D noise reduction, Y/C cross talk suppression and frame rate conversion.
Features
Analog Input
10-bit triple-ADC
Maximum analog sampling rate up to 165MSPS
Supports analog input range: 0.45V ~ 1.1V (P-P)
Up to three analog input channels
3 to 1 input mux
Supports RGBHV/RGBS/YCbCr/YPbPr input
Auto offset/phase adjustment
Supports Sync-on-Green(SOG) and Composite-sync
Supports input resolution up to 1080P
Supports macrovision input
Flexible Digital Video Input
Supports 24-bit RGB/YUV digital input
Supports 16-bit YUV 4:2:2 input
Supports 8-bit BT656, 601 input
Supports 8-bit BT1120 input
Supports interlace and progressive SD input
Supports 720P, 1080I, 1080P HD input
Supports VGA input up to UXGA
Auto-mode Detection Auto Position (Blank) Detection
Frame Rate Conversion
Independent horizontal and vertical scaling
Frame rate conversion
External Memory Controller
Supports 2/8MByte memory size
16/32-bit data access
Memory bus speed up to 162MHz
De-interlacing
Supports HD1080I to1080P conversion
Supports SD NTSC/PAL to 480P/576P conversion
Edge correction de-interlacing
4-field motion adaptive de-interlacing for SD and 3-field for HD
Global noise reduction
3:2/2:2 pull-down detection
Video Enhancement
Black/white level expansion
Color transition improvement
Dynamic peaking
Dynamic range expansion
Brightness, saturation, contrast and hue adjustable
2 sets primary color enhancement
Blue stretch
Embedded OSD
Supports 1/2/4-bit DRCS character mode
Shadowing, transparency and blinking
Block double width and height
Zoom out
One OSD window with alpha-blending
Output Formatter
10-bit triple-DAC for component video output
Analog VGA or YPbPr output
Video encoder
50~75Hz scan rate conversion
15~75KHz horizontal frequency
16-bit YUV 4:2:2 digital output with sync
24-bit YUV/RGB 4:4:4 digital output with LCD panel compatible sync
VGA output resolution up to UXGA
Video outputs: 480I, 480P, 576I, 576P, 720P, 1080I, 1080P
2-wire I2C Slave Interface
Package
LQFP-176 plastic (20mm×20mm)
PB-free and RoHS compliant
Applications
LCD Controller
Video Converter/ Set-Top-Box
Car Infotainment Device
Portable/ Desktop Visualizer
Industrial Camera
Function Block Diagram
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