I have a simple design using the FTDI FT232HL chip. If you are not familiar it is a "Single Channel HiSpeed USB to Multipurpose UART/FIFO IC."
I am having an issue where my 3.3V rail looks like the following below. With this, I do not get a virtual COM port connection to the PC.
I have the power supplies, internal LDO’s and USB connector hooked up the following.
Please let me know of any issues you see or any potential causes I can check.
When I connect a USB isolator, namely the Keterex KX USB-150, the 3.3V rail becomes solid and then I get the COM port showing on my PC.
Thoughts?
I am having an issue where my 3.3V rail looks like the following below. With this, I do not get a virtual COM port connection to the PC.
I have the power supplies, internal LDO’s and USB connector hooked up the following.
Please let me know of any issues you see or any potential causes I can check.
When I connect a USB isolator, namely the Keterex KX USB-150, the 3.3V rail becomes solid and then I get the COM port showing on my PC.
Thoughts?