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TS201 Programming Issue ——JTAG scan failed

Question asked by Greatshouldbe on Feb 21, 2012
Latest reply on Mar 13, 2012 by RChary

Hello all,


I have a problem with ADSP-TS201: when trying to program the DSP with HPUSB-ICE emulator, I got error " An EMUIR scan was attempted ,but the dsp is not ready to accept instruction via JTAG " as following figure


This error occured only when I connected the IRQ0 pin of TS201 to FPGA which offered a periodic pulse as interrupt request signal. The period of this pulse is about 0.5s while the pulse width low is about 32ns. In addition,

(1) Without download FPGA program, TS201 can work normally.

(2) The strap pin BM was left not connected, so the interrput were disabled after reset.

Now that IRQ0 interrupt was essential, I wondered what's the reason of this problem and how to resolve it.