Genesys Cameras

Posted : admin | On 04-03-2021



GL865A is a high performance USB 2.0 UVC compliant controller mainly for PC Camera and NB camera applications with one channel MIPI interface for sensor connection. GL865A provides up to 30 fps at HD 720p (1280x720) resolution. GL865A also supports USB isochronous mode to provide certain bandwidth to insure user can get smooth usage experience on video applications even running high bandwidth consumption devices concurrently. GL865A also supports bulk mode to confirm the reliability of transferred data.

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The GL865A is compliant with USB Video Class 1.1. It works with Microsoft native inbox Windows driver which is bundled with all WinXP SP3, Vista, Windows 7 and Windows 8. Alternatively, Genesys Logic provides proprietary drivers for GL865A to enable users for better image performance and special function requirement.

The GL865A has a built-in MJPEG engine and hardware ISP to process RAW data from CMOS sensor to provide high resolution and high frame rate of video stream. It supports up to 30fps at 720p (1280x720) resolution.

GL865A provides industry leading cost-effective OCCS (on chip clock source), which eliminates the need of an on board crystal for USB frequency. It also has a built-in 2-channel voltage regulator.


  • USB Functions
    • Compliant with USB 2.0 high-speed and full-speed
    • Complaint with USB Video Class 1.1
    • Support USB 2.0 Isochronous Video pipe up to 24MB/s
    • Support USB 2.0 Bulk Video pipe
    • Output data format can be either YUV or MJPEG
  • System
    • Embedded 8051 micro-controller, operate @ 15MHz or 30MHz clock
    • Built-in 3.3V to 1.2V regulator for chip core power
    • Built-in 2-channel regulator (1.2V~1.8V, 2.5V~3.0V) for sensor power
    • Built-in OCCS (on-chip clock source) to eliminate the need for a 12MHz crystal clock source on board
    • Support in-system firmware upgrade
    • The sensor, UVC, property control settings can be stored in either external EEPROM (24Cxxx) or SPI Flash
    • Support alternative proprietary driver to enhance image performance
    • Compliant with UVC(USB Video Class) mode, OS in-box driver okay
  • Sensor Interface
    • Support one lane MIPI sensor interface up to 1Gbps
    • Support YUY2 and RAW (Bayer Pattern) data format from sensor
    • Support UVC uncompressed YUY2 payload
      • Video stream up to：7 fps in SXGA (1280x1024), 10 fps in HD 720p(1280x720)
    • Support UVC compressed MJPEG payload
      • Video stream up to : 30 fps in SXGA (1280x1024), 30 fps in HD 720p(1280x720)
    • Support up to 96MHz pixel clock
    • Support I2C for sensor control
    • Still image capture up to 8192 x 4096 resolution
  • MJPEG Encoder Engine
    • Support MJPEG up to resolution SXGA(1280x1024)
    • Support UVC MJPEG payload
    • Support programmable compression ratio which is a function of transport bandwidth and image quality options
  • Image Signal Processing (ISP) Engine
    • Support resolution up to SXGA(1280x1024)
    • The 3rd generation ISP Cezanne with line buffer width of 1280 pixels
    • Individual Len Shading Correction for R/G/B channels
    • G1/G2 balance filter
    • Programmable RGB gamma table and Y gamma block
    • Black Level Compensation for individual R/G/B channels
    • Dynamic dead pixel detection and correction
    • Edge enhancement
    • Input pattern interpolation and noise reduction
    • Configurable Color Correction Matrix for R/G/B channels
    • AWB (auto white balance) control with both White Point algorithm
    • AE (auto exposure) adjustment
    • Zoom In image from sensor, and output with various resolutions
    • YUV offset and gain
  • Standard UVC property controls
    • Brightness control (UVC defined)
    • Contrast control (UVC defined)
    • Saturation control (UVC defined)
    • Hue control (UVC defined)
    • Gamma control (UVC defined)
    • Sharpness enhancement control (UVC defined)
    • Auto Exposure and Manual Exposure adjustment (UVC defined)
    • Automatic White Balance (AWB) adjustment (UVC defined)
    • White Balance temperature control (manual) (UVC defined)
    • Backlight compensation control (UVC defined)
    • Power line frequency control (UVC defined)

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  • USB Certification
    • Pass the WHQL test of WinXP, Vista, Win7 and Win8
    • Pass the USB-IF UVC test
  • Platform Support
    • WinXP32/64, Vista 32/64, Win7 x86/64, Win8 x86/64, Win8.1 x86/64 , Win10 x86/64
    • MacOS 10.4.8 and later
    • Linux UVC driver
  • Package
    • 32 pin QFN package
  • SPI Flash Support List
    • MXIC: MX25L512, MX25L5121E
    • ATMEL: AT25F512B
    • EON: EN25F05, EN25P10
    • PMC: PM25LV010, PM25LV512, PM25LD512, PM25LD256C
    • PCT: PCT25VF512A
    • ST: M25P05
    • Winbond: W25X10
    • GigaDevice: GD25Q10, GD25Q512
  • EEPROM Support List
    • ATMEL: 24C256
    • GainTec: 24C64
    • ISSI: IS44A