actually I'm trying to isolate the JTAG-Ports of teh ADSP-BF537 with 2 ADUM3400.
But there are several problems.
If I bypass TCK and TDO , so just TMS, EMU, TRST and TDI are isolated, everything works fine.
If I isolate any of the other two signals I get an error in VDSP: "Visual DSP has detected 2 devices in the JTAG chain".
Has anyone an idea? I use the ADDS-HPUSB-ICE emulator.