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JanVrkoslav's avatar
JanVrkoslav
Icon for New Contributor rankNew Contributor
3 years ago

Cyclone 10 LP JTAG galvanic isolation

Hello, Cyclone 10 design guideline says: JTAG pins in the Intel Cyclone 10 LP device are powered up by VCCIO. However, you may need to use VCCA in some cases. • For devices using VCCIO of 2.5, ...
FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
3 years ago

Your JTAG interface signals are sourced on board, thus it's quite simple to avoid overshoot that might violate input voltage range. I would add source side series termination with trace impedance (e.g. 50 to 70 ohm, including driver impedance).

Frank