2 Replies Latest reply on Dec 9, 2015 12:49 PM by matthew.rodriguez_1513221

    Devices disappear after configuring

    matthew.rodriguez_1513221

      I am using the CY7C65211 part on a custom circuit board and I am having some difficulty. When I first plug in the USB, I am able to see the device in the Configuration Utility as well as in my device manager. After I configure the part as a UART, the software confirms the settings I want are in the device after programming and I can see some data on the D+ and D- nets of the USB.  After I unplug the USB and plug it back into my computer or power cycle my board, the software no longer recognizes the device and my device manager does not know that there is a USB connected. I have confirmed that the chip is in the correct configuration and all of the voltages are the same as specified on the data sheet, but cant figure out why this is happening. Has anyone seen this problem before and have you found a solution?

         

      Thanks