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Message
From: Marc Colling<Marc.Colling@M...>
Date: Tue Mar 30 11:15:59 CEST 2004
Subject: [pci] (no subject)
Hi,Look on the Altera Web-Site for the Application Note AN 330: Connecting
Altera 3.3V PCI to 5V PCI Bus
Marc
At 16:52 30.03.2004 +0800, you wrote:
>hi,all
> I'm using cyclone to implement pci interface in my project.But
> cyclone only supports 3.3v pci io standard,if the motherboard only
> provides 5v pci signaling environment then how to implement?
> In the cyclone datasheet there is a example of driving a cyclone
> device with a 5v device.
>A external resistor is used and the internal PCI clamp diode is enabled.If
>i have to do like that or use a pci level convter then another problem is
>that the length of pci signal traces has very tough specification.so if i
>use external resistors or level convters ,how should i calculate the
>length of the signal traces?
>
>
> Highly thankful to u and sorry for my poor english!
>
>liqiyue
>
>
>
>
>_______________________________________________
>http://www.opencores.org/mailman/listinfo/pci
MaCo-Engineering
Dipl.-Ing. Marc Colling
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GERMANY
phone : (+49) 6809 / 7020190
fax : (+49) 6809 / 7020191
mobile : (+49) 170 / 7780788
Marc.Colling@M...
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