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Hi Everybody, I am using ULink with uPSD3400. It was working properly and all of a sudden it stops to work and I receive "No JTAG Device Found". I install the new driver version(V2.10), uVision can recognize the device serial number but there is nothing in the JTAG device chain. The leds (at the ulink) are turn on(USB is on, COM and RUN are turn on for half a second when I am connecting the device to the USB port). In addition according to my device manager Ulink is working properly. So, what can be the problem? Thanks Kobi
Is the JTAG reset on your board connected directly to the uPSD3400 device or is there a reset circuit in between which causes a delay of the reset signal? Are there other devices connected into the JTAG chain? Maybe the device is broken. Can you try with another board?