/diy/ - Do It Yourself

I’m having some problems with a PCB I made. I’m trying add USB capability to the board using a FT230XS-R (USB to basic UART IC). I’m sending bytes from an MCU’s TX pin to the FT230X TXD pin, however I’m noticing some strange behavior. Namely, that I’m picking up a signal when probing the RESET pin as well as the 3V3 pin. I’m getting a signal out of USBDP, but not out of USBDM. The two LED indicators I’m using on the TX and RX CBUS pins are also very faintly lit, for whatever that’s worth. Could anyone provide insight into this problem? What could be some potential causes? I’ve checked my soldering and it looks okay, but don’t feel it’s appropriate to rule anything out. I’ve never implemented this before, and my background is not in embedded, so apologies for the amateurish question. Any help would be greatly appreciated. Thank you very much in advance