Forum Discussion
Altera_Forum
Honored Contributor
18 years agoOn chip terminations cyclone III
Is the on chip termination available on these devices good enough to eliminate external source termination? The reason I ask is that it does not look like it is being used on the kit boards - I still...
Altera_Forum
Honored Contributor
18 years agoI talked with a guy from Altera a couple of months ago and he said it was a coin flip on which way to go. He seemed to like it on the EP3Cxx parts. I just built a board without the rpacks so I hope he was right. But, with just the EP3C25, ISSI SRAM, and Intel P30 flash I don't have more then 1.7" length on any trace. I basically took the OrCAD files that come with the Cyclone III starter board and took out the USB blaster and DDR. Then I added an xPort, some opto coupled I/O and a board/board connector to get to an A/D and stepper controller on a second board. Maybe I'll know in a few weeks it the termination is OK.
Good Luck Al