SN9C2272M SONIX USB 2.0 Video PC Camera Controller ISP, supports VGA-QXGA(0.3MP-3MP) sensor ISP, MIPI-CSI2 interface, industry standard 2-wire serial interface, Y8, YUY2 and RAW(Bayer mode) image data
SN9C2272M, SONIX USB 2.0 camera IC, SONIX Video PC camera controller ISP, support for 3MP sensor ISP, support for MIPI-CSI2 interface, support for industry standard 2-wire serial interface, support for Y8, YUY2 and RAW(Bayer mode) image data format
1, SN9C2272M General Description
The SN9C2272M is a USB 2.0 High-Speed (HS) compatible PC camera controller. The low power design
provides extreme low consumption on device standby, operation and even high performance state. The low
thermal design gets the module operating temperature inside platform under reasonable range. The
SN9C2272M is fully compliant with USB Video Class. The OS systems supported are including Windows 7,
Windows 8, and Windows 10.
The new generation image signal processing engine brings sight video experience. The high performance
Motion-JPEG compression engine makes variant compression ratio to consider bandwidth requirement well
which output MJPG data format. It is also a high performance and high speed transmission engine on YUV
un-compression data format. With the integrated sensor interface and color processing engine, it can supports
most available CMOS sensors that range from VGA to QXGA. It is controlled by the embedded micro-controller
and the statistics for 3A (AE / AWB / AF) are built-in.
To decrease the BOM cost and PCB area, the SN9C2272M integrates 2 voltage regulators for sensor power.
One is for analog part and the other is for I/O power. Futhermore, the built-in Clock Synthesizer for performance and power saving makes an external crystal is not needed.
The QFN32 3x6mm package dimension is also for the thin design. The flexible architecture is consisted of mask
ROM, internal RAM and external serial-flash which can store the customized codes and parameters. With the
highly-integrated firmware architecture and the developing kit provided by SONiX, it’s easy for 3rd party to fulfill customized features.
2.0 SN9C2272M Features
2.01 System
■ 3.3V, 1.2V power supply are necessary (Core power 1.1V provide by Backend IC )
■ Extreme low power consumption, < 30mA when standby and < 0.5mA when suspend (Power consumption of sensor is not included)
■ Built-in Clock Synthesizer for performance and power saving
■ Built-in PLL for internal clock generation
■ Using external serial flash to store customized code and data
■ No external RAM needed
■ 1.8V output power source to supply CMOS sensor’s I/O power
■ 2.8V output power source to supply CMOS sensor’s analog power(2.7V~3.3V control by FW setting) or 1.2V output power source to supply CMOS sensor’s core power
■ QFN package of 32-pins
2.02 USB Controller
■ USB 2.0 high-speed and full-speed compatible
■ USB Video Class 1.1 compliant
■ USB 2.0 HS/FS auto sense and switch
■ USB FS mode and USB disconnection are programmable
■ USB Low Power Management Sleep State with RTD3
■ 5 endpoints: 1 CONTROL pipe, 2 Interrupt IN , 1 Bulk IN (Video stream) and 1 Isochronous-IN (MJPEG/YUY2 video stream)
■ 6 alternate settings for Video Streaming Interface
2.03 Sensor Interface
■ Support QXGA(3.0MP, 2048x1536), FHD(2.0MP, 1920x1080), UXGA(2.0MP, 1600x1200), SXGA(1.3MP, 1280x1024), HD(1.0MP, 1280x720), VGA(0.3MP, 640x480) CMOS ISP sensor
■ MIPI-CSI2 interface supported
■ Support Y8, YUY2 and RAW (Bayer-Pattern) image data format from sensor
■ Output clock: 480/(m*n) MHz output clock request of CMOS sensor silicon.
■ Up to 96Mhz pixel clock is acceptable
■ Support industrial standard 2-wire serial interface for sensor control
2.04 Color processing
■ AE histogram statistics
■ AWB window statistics
■ AF edge window statistics
■ On-the fly defect-pixel cancellation
■ Lens shading compensation for R/G/B channel
■ Low pass filter
■ Individual digital color gain control for R/Gr/Gb/B channels
■ Individual digital color gain control for Y/Cb/Cr channels
■ Pixel offset (optical black) compensation for R/Gr/Gb/B channels
■ Programmable gamma table for RGB channels
■ Programmable color conversion matrix for R/G/B input
■ Configurable noise reduction
■ De-color aliasing in Edge
■ Configurable edge enhancement
■ Programmable gamma table for Y channel
■ Configurable windowing function after processed image
■ Programmable hue and saturation
■ Auto Gamma for backlight preview
■ Auto Frequency for MSOC
■ Auto de-flicker
■ Wide Dynamic Range (WDR)
■ Vertical lens distortion correction (VLDC)
2.05 Scaling Engine
■ Scale down on Y/Cb/Cr
■ For QXGA / UXGA / SXGA / VGA sensors, combined scaling and windowing function provides
similar view angle for QXGA / FHD / UXGA / SXGA / HD / SVGA / VGA / CIF / QVGA / QCIF / QQVGA output format
■ Fine scaling(128/m, m:128 ~ 2047)
2.06 Line OSD
■ Displays Up to 4 Rows x 24 Characters with independent start position
■ Character Size HxV: 16x16, 16x24
■ Line zoom (x1, x2, x3, x4 to x8 for both X and Y coordinates)
■ Character with transparency and other 3 color choices.
■ 64 different user definable characters can be stored in RAM.
2.07 JPEG Encoder
■ JPEG YUV422 baseline format
■ Built-in JPEG encoder support USB Video Class MJPEG payload
■ 128 bytes quantization tables for Y and C provide programmable compression ratio
■ Support frame level bite rate control mechanism
2.08 Video / Still Image
■ Output video / still image format:
■ USB Video Class Uncompressed YUY2 payload (16bits/pixel)
■ USB Video Class MJPG payload
■ Video streaming up to 30fps@FHD at USB2.0 high-speed mode.
■ Still Image capture up to QXGA and is able to support UVC still image capture method 1/2
2.09 Frame rate
■ Frame rate considering USB bandwidth limitation
Normal Resolution @ USB High-Speed
Format QXGA FHD UXGA SXGA HD SVGA VGA CIF QVGA QCIF
YUY2 3fps 5fps 6fps 9fps 12fps 25fps 30fps 30fps 60fps 60fps
MJPEG 24fps 30fps 30fps 60fps 60fps 120fps 120fps 120fps 120fps 120fps
■ Frame rate considering sensor characteristic
The maximum frame rate is limited by how many fps that sensor can output under acceptable maximum pixel clock
2.10 GPIO
■ 3 GPIOs are predefined as following functions including LED control, serial flash write protect, sensor reset.
■ 1 GPIO is reserved for customized application.
2.11 Micro Controller and USB Device Features
■ Built-in 8032 micro controller with 6K bytes data memory, and CPU clock rate is up to 120MHz
■ Load extended F/W up to 128KB from external serial flash.
■ Load VID/PID, manufacturer, product and serial number string from external serial flash.
■ Load UVC parameter definition from external serial flash.
■ F/W is upgradeable from PC
■ Force USB at FS mode / Force USB disconnect
■ Interrupt at the end of H/W windowing
■ Watch dog supported
2.12 Pre-Defined for USB Video Class
■ Brightness control (UVC defined)
■ Contrast control (UVC defined)
■ Hue control (UVC defined)
■ Saturation control (UVC defined)
■ Sharpness control (UVC defined)
■ Gamma control (UVC defined)
■ Privacy control (UVC defined)
■ LED indicator on video streaming
■ UVC Extension unit support
2.13 Platform Support
■ Microsoft Window 7 32 & 64 bit, Microsoft Window 8/8.1 32 & 64 bit, Microsoft Window 10 32 & 64 bit
■ Mac - OS X 10.4.8 or later
■ Linux with UVC driver (open source available at http://linux-uvc.berlios.de/)
All of the above pictures are taken after matting the online showing, what you see is what you get.
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