AV128
General description
AV128 mobile image signal processor provides many solutions for video and image application. Its core features are ISP (Image signal processing) and MJPEG encoder, with built-in JPEG data buffer for one VGA pictures. With its standard CCIR601/656 output it can be used in cellular phone or mobile camera market as ISP+JPEG image process and video compression chip. The built-in JPEG data buffer and slave SPI/I2C interface make this ASIC be useful in many products.
Main features
• Image
Data Input
Support CCD and CMOS image sensor.
CMOS 8/10/12-bit Bayer pattern sensor input.
Support OmniVision, Micron, Samsung, Pixelplus, MagnaChip, Hynix, SET,
Sony etc.
Programmable sensor interface thru I2C bus
Resolution up to 8Megapixel.
Digital video capture speed: 3M@20 fps, 8M@7.5fps. Up to 72 MHz pixel
clock.
External MJPEG bypass mode supported
• Image
Processing
Lens shading correction
Gamma correction
Bad pixel correction
Demosaic
Color enhancement
Scaler
AVG
Histogram
3A
(Auto exposure control, Auto white balance control, Auto
anti-flicker)
4th A(Auto Focus adjustment).
5th A( Automatic Facial tracking in application
software).
Raw image input 3M (2048x1536)@20fps, 5M (2592x1944)@12fps, 8M
(3264x2448)@7.5fps,
Output 8 bit data as ITU656/601 interface
•JPEG/MJPEG encode
JPEG/MJPEG for video compression
Size: 2048x1536, 1600x1200, 1280x1024, 800x600, 640x480, 320x240,
160x120.
MJPEG: VGA (30fps), 2M (1600x1200)@30fps, size up to 3M
(2048x1536)@20fps
Maximal running clock 150 MHz
Support MJPEG output format with 8bit data, clock and data valid
signals.
•SRAM buffer manager
Manager/Configure JPEG 8 lines ping-ping buffer
Buffer Size-for VGA JPEG 75KB
DMA to SD & SPI controller
Accessed thru slave spi interface
•Miscellaneous
Turbo 8051 interface for video and audio data control.
Slave I2C or spi interface
Programmable Vendor and Product ID through EEPROM.
56K ROM and 8K byte SRAM 8051 code loadable from USB port or EEPROM. |
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