Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Cyclone II + Quickswitch = 5V PCI? How Reliable?

I am trying to build a 5V PCI card with a Cyclone II and i am probably going to follow AN330 instructions using quickswitchs. I am not worried about not being fullly PCI compliant but what worries me...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

As AN330 explains, there are limitations regarding PCI impedance matching. It can cause voltage levels outside the PCI levels, if the bus connection length is large.