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Altera_Forum
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16 years ago

Stratix3 Dev Kit, HSMC Card Issue

Hi, I'm developing a video processing app on a Stratix3 dev kit. I've been experiencing cross-talking issue of the HSMC Debug Header Breakout Board that come as part of my kit. The input ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Yes, something of this kind. Please consider, that the HSMC connector has a low impedance ground at the center while the debug header has none. This can work with differential signal pairs but is really bad with single ended signals.

If the debug header allows to solder a number of additional ground pins with low impedance connection to the HSMC ground node, this may work as well. Otherwise you should think about designing your own interconnect board.