Verilog Implemention and USB3.0 USB video device class (UVC) Controller implementation with cypress FX3 for generic FPGA CSI receiver. No FPGA hardware specific components has been used so can be easily ported to any low cost FPGA.
What make this camera sensor different to finished camera modules like OV7670 or OV2640
IMX219 camera is bare bone camera sensor. What do means when i say bare bone camera sensor is , there not much image processing going on on the camera die it self. Camera sensor is Sensor array with Bayer filter on it , 10 bit ADC , clock system , MIPI output driver and I2C controllable system control.
What does this means for us as camera sensor implementer. As my final goal is to interface this camera to USB3.0 UVC with RAW YUV. This camera does not output YUV, forget about YUV this will not even output RGB. Camera output is absolute RAW 10-bit ADC conversion result from the Bayer filtered sensor array.
So go first get RGB output from bayer raw data, a Debayer or demosaic need to be performed. Once demosaic is done we will have RGB ready to be converted to YUV. And one we have YUV it can be transmitted to USB to be displayed.
What next this camera will not have is any automatic control over exposure. because camera does not have any intelligence to know how dark or bright scene is. Solution to this problem what raspberry pi implement is , Raspberry Pi regularly on each frame update analog gain register over I2C to adjust gain according to how bright and dark scene is.
This camera does not have any white balance control as well so host must do correct while balance compensations. To get correct colors out of image.
Currently available Configurations