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Altera_Forum
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21 years ago

cyclone ep1c6Q connects to 5V PCI

In my design, I want to use bank 4 of ep1c6q240 to connect 5V pci. Must i use buffers between ep1c6 and 5V pci, including AD[31:0] , CLK, control signals? If so, what kind of buffer chips should use ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Hi,

I have read the files, but still have questions.

My pci add in card will be connected to PC motherboard. The PCI connector on common PC motherboard does not have the 3.3V PCI keys, so I think using buffers is better.

If having used buffers, which bank of EP1C6Q244 shall I use, bank1,3(with 3.3V PCI support) or bank 2, 4(without 3.3V PCI surpport, just 3.3V TTL)?

The PCI CLK length is 2.5inches. If using buffer chips, it means that the wire between PCI CLK pin and buffer chip is 2.5inches, or from PCIpin to EP1c6Q pin is 2.5inches?

Thanks,

eRen