Bert you are correct in your description. I was wondering if the FTDI chip was causing a problem. I had posed that question to the audio device tech group and hadn't gotten an answer yet. When I plug my device into a computer, it has to load the drivers in order to function. However, with the audio device, it has no way to do this.

I'll check my schematics and board layout and see if I have another pair of pins I can output to or if I can tap into the trace at a via before the FTDI chip to get the raw signal.

Thank you,
Hylan