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Altera_Forum
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12 years ago

HSMC loopback adapter makes JTAG unusable

Hello, I am trying to use an HSMC loopback adapter on my Cyclone V SoC dev kit to debug it with SignalTap over the integrated USB Blaster. Each time I connect the HSMC loopback adapter, I can...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

I am still trying to find out WHY my board does not work.

Is it normal that the voltage of the JTAG-TDO of the HPS is 3,3V as this exceeds the maximum absolute ratings specified for the analog switches used to configure the JTAG chain (absolute maximum voltage: Vcc + 0,5V)?