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Paul, Thank you for taking the time to look at this and responding so quickly. I am a huge Teensy fan and have incorporated them into a number of product designs over the past few years. Your output is exactly what I would have expected but not what I am seeing here. So I think that I may...

I am trying to communicate with a MAX5104 DAC via SPI on a Teensy 4.0 processor. I have had mixed results but my current issue is that the call to SPI.transfer16() never returns. I can comment this transfer call out and the program does not hang. I have tried this on several Teensy 4.0...

Thanks for your quick reply. This info is all I needed. I am looking forward to having a better debug tool using this. I will post a note on how that goes when I get it up and going. Thanks again. It's most appreciated. Louis

Hi, I would like to wire up a Jtag interface as you have shown here but seem to be missing some information. Do you have a schematic diagram of the connections? I see several additional wires on the CPU, but it's not entirely clear what those are. Also, what are the pin connections on the Jtag...