SN9C270A upgrade ZX302A SONIX USB 2.0 Video PC Camera Controller IC DSP, Max suport SXGA(1280*1024P)
SN9C270AJG, the old version of ZX302AJG, USB 2.0 video PC camera controller IC, Sonix camera DSP, fully compatible with ZX302AJG, support SXGA(1280*1024P) image sensor ISP
The 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 is fully compliant with USB Video Class. The OS systems supported are including Windows XP, Windows Vista, Windows 7 and Windows 8.
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 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.
To fully meet Ultrabook requirement, one of the most significant of is to save power consumption 40% less than previous backends. The Low Power Management Sleep State(LPM L1) is supported to save power consumption for host controller. 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 stores 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 Features
2.1 System
● 3.3V, 1.2V power supply are necessary (Core power 1.2V 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)
● QFN package of 32-pins
2.2 USB Controller
● USB 2.0 high-speed and full-speed compatible
● USB Video Class 1.1 compliant
● USB2.0 HS/FS auto sense and switch
● USB FS mode and USB disconnection are programmable
● USB Low Power Management Sleep State with RTD3
● 4 endpoints: CONTROL pipe, UVC Interrupt IN and Isochronous-IN (video, 24MB/s max)
● 6 alternate settings for Video Streaming Interface
2.3 Sensor Interface
● Support SXGA(1.3MP, 1280x1024), HD(1.0MP, 1280x720), VGA(0.3MP, 640x480) CMOS ISP sensor
● Support 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
2.4 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
2.5 Scaling Engine
● Scale down on Y/Cb/Cr
● For SXGA / VGA sensors, combined scaling and windowing function provides similar view angle for SXGA / HD / SVGA / VGA / CIF / QVGA / QCIF / QQVGA output format
● Fine scaling(128/m, m:128 ~ 2047)
2.6 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
2.7 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@HD at USB2.0 high-speed mode.
● Still Image capture up to SXGA and is able to support UVC still image capture method 1/2
2.8 Frame rate
● Frame rate considering USB bandwidth limitation
Normal Resolution @ USB High-Speed
Output format SXGA HD SVGA VGA CIF QVGA QCIF
YUY2 9fps 12fps 25fps 30fps 30fps 60fps 60fps
MJPEG 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
2.9 GPIO
● 3 GPIOs are predefined as following functions including LED control, serial flash write protect, sensor reset.
● 1 GPIO is reserved for customized application.
2.10 Micro Controller and USB Device Features
● Built-in 8032 micro controller with 3K bytes data memory, and maximum CPU clock rate is 24MHz
● Load extended F/W up to 64KB 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
● CPU watch dog
2.11 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
2.12 Platform Support
● Microsoft Windows XP 32bit SP2, Microsoft Windows XP 64bit, Microsoft Windows Vista 32bit, Microsoft Windows Vista 64bit, Microsoft Window 7 32bit, Microsoft Window 7 64bit, Microsoft Window 8
● Mac - OS X 10.4.8 or later
● Linux with UVC driver (open source available at http://linux-uvc.berlios.de/)
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