USB superspeed peripherals Forum Discussions

I'm working on a UVC application using the CX3 microcontroller and I need to configure over 1000 registers for my imager. For an array containing address/value pairs for 1000 registers, the expected memory is around 4KB, but when it exceeds 500 members, the application fails to work. Given the CX3's 512 KB RAM, I believe there should be sufficient memory to accommodate this array. The image file for the application is 148 KB.

Question: Do you have any guidance on optimizing memory usage for this scenario? I know that cyfxtx.c file needs to be modified, but I don't know which area and how.

This must be a silly question, but I can't find any documentation or example of how to interface EZ-USB FX3 to another processor. All the examples are talking about FPGA. The scenario I have in mind is this:

A USB webcam is connected to FX3. FX3 controls the webcam and streams the video over GPIF II to another processor which does something with the stream

Cannot generate ttyUSB0 after connecting CYUSB3KIT-003 to Ubuntu 22.04.

No driver shown in lsusb -t. brltty has been deleted.

I still can't generate ttyUSB0 after running make in cyusb_linux_1.0.5.

I can't run install.sh due to a possible problem with the version of qt4, but I don't think this should be the reason affecting the failure to install the driver? If anyone can help me I would greatly appreciate it!

Here is the lsusb -t

Port 1: Dev 11, If 0, Class=Vendor Specific Class, Driver=, 480M

Here is the dmesg
[ 1469.484254] usb 3-2.1: new high-speed USB device number 11 using xhci_hcd
[ 1469.778634] usb 3-2.1: New USB device found, idVendor=04b4, idProduct=00f1, bcdDevice= 0.00
[ 1469.778642] usb 3-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1469.778644] usb 3-2.1: Product: FX3
[ 1469.778646] usb 3-2.1: Manufacturer: Cypress

Hi Everyone,

I am facing an issue on interfacing full hd sensor with CX3. I've taken the necessary constraints from directly from our Sensor Vendor. I must note that i am using our custom design board

Solution for FIFO delay value was to use slower CSI Clock/less data lanes/faster output pixel clock but;

CSI Clock: Exact value given by Sensor Vendor -> i believe i cant change

Data Lanes: Camera has 4 Data Lanes connected to it's Serializer. My matching Deserializer daughter board has 2 lanes connected to CX3. -> Already reduced to 2 data lanes from 4.

Output Pixel Clock: Even though sensor is capable of streaming 30 fps, i had to reduce FPS option to 26.8 which was the exact value i've calculated  to generate 100 MHz output pixel clock -> can not be exceeded.

Is it okay to reduce CSI Clock as my favor?(Min value was calculated as 266MHz by configurator)

I am trying to develop USB 2 functionality for a UVC camera but am having difficulty with USB 2 enumeration. When we plug in our device to a USB 2 port, USB 3 port with a USB 3 cable or a USB 2 hub, we are seeing a Windows error saying that the device could not be recognized and USBTreeView reports that enumeration failed with error code 43. I have inserted logs to the enumeration/plug-in process and this is the USB 2 error case (the value in parentheses is the event data):

UsbEventCB: CY_U3P_USB_EVENT_VBUS_VALID (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SUSPEND (0x0)
UsbEventCB: CY_U3P_USB_EVENT_CONNECT (0x0)
UsbEventCB: CY_U3P_USB_EVENT_RESET (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SPEED (0x1)
UsbEventCB: CY_U3P_USB_EVENT_RESET (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SPEED (0x1)
UsbEventCB: CY_U3P_USB_EVENT_RESET (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SPEED (0x1)
UsbEventCB: CY_U3P_USB_EVENT_RESET (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SPEED (0x1)
UsbEventCB: CY_U3P_USB_EVENT_SUSPEND (0x0)

We are able to get USB 3 to work and sometimes USB 2 works. The USB 3 logs are below:

UsbEventCB: CY_U3P_USB_EVENT_VBUS_VALID (0x0)
UsbEventCB: CY_U3P_USB_EVENT_CONNECT (0x1)
UsbEventCB: CY_U3P_USB_EVENT_SET_SEL (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SETCONF (0x1)

And the working USB 2 case:

UsbEventCB: CY_U3P_USB_EVENT_VBUS_VALID (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SUSPEND (0x0)
UsbEventCB: CY_U3P_USB_EVENT_CONNECT (0x0)
UsbEventCB: CY_U3P_USB_EVENT_RESET (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SPEED (0x1)
UsbEventCB: CY_U3P_USB_EVENT_RESUME (0x0)
UsbEventCB: CY_U3P_USB_EVENT_SETCONF (0x1)