FreeLists / si-list / [SI-LIST] Re: PCI-X (133Mhz) bus terminations

[Kishan <kschowhan@xxxxxxxxx>]

I have worked on 133Mhz PCIX  point to point topology.It's better to arrive
at min/max trace lengths from timing perspective and follow the PCIX
specs.One may need to do little length matching  while routing the PCIX
signals and it works fine.
Kishan

On 6/1/06, Peterson, James F (FL51) <james.f.peterson@xxxxxxxxxxxxx> wrote:
>
> If you are going to ask a topology question like this, a good way to ask
> it is from a timing perspective like Chris has asked below. With PCIx
> 133 I believe you get 2ns to get the signals to settle down on your pcb.
> Can you meet that with your topology? Probably, but I would still try
> for the best solution and verify it, trying to reserve as many hundreds
> of picoseconds as possible for margin....
>
> Jim=20
>
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of Chris Cheng
> Sent: Wednesday, May 31, 2006 10:03 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: PCI-X (133Mhz) bus terminations
>
> Do you really worry about a 2 inch PCIX net running at 133MHz ?
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx
> [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Babid A
> Sent: Wednesday, May 31, 2006 2:16 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] PCI-X (133Mhz) bus terminations
>
>
> Hello,
>   =3D20
>   I have PCI-X bus(133Mhz) driver with a fan out of 2. What is the best
> =3D wiring topology & termination for this case?=3D20
>   =3D20
>   Drvier <=3D3D=3D3D=3D3D=3D3D> 57ohm transmission line (2inch) =3D
> <=3D3D=3D3D=3D3D=3D3D>Receiver 1 & 2
>   =3D20
>   -Thanks,
>   =3D20
>   =3D20
>   =3D20
>         =3D09
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