RE: PCI-X Attributes

[Sanjay Goyal <SanjayG@ami.com>]

Dear Amit
  For PCI-X interface
   if a transaction is initiated at either of the interface, it should use
that interface's attribute only as both primary and secondary side 
   have seperate Bus No. values, they can not use attribute passed by the
other interface.
  So even if the transaction was intiated on Primary side, if it passes
through to Secondary side, Secondary should use its own attributes.

Hope this helps

Regards
Sanjay Goyal

> -----Original Message-----
> From:	Amit Shah [SMTP:Amit@dcmtech.com]
> Sent:	Wednesday, April 12, 2000 5:15 PM
> To:	'pci-sig@znyx.com'
> Subject:	PCI-X Attributes
> 
> Hi PCI-X Experts,
> 
> In a "PCI to PCI-X" Bridge where the transaction(originating at PCI) is
> getting converted from PCI to PCI-X, the PCI-X master makes his own
> attributes and drives them on the bus.
> 
> But for a PCI-X to PCI-X Bridge, when the transaction(originating on PCI-X
> Primary) get initiated on the PCI-X Secondary, can the Bridge drive his
> own attributes for that transaction, or should he drive the original
> attributes of the initiator. 
> 
> If the bridge drives his own attributes on Secondary, then the decoding of
> the split completion transaction on secondary would be much simpler.
> 
> Help Needed !!
> 
> Regards,
> 
> Amit Shah
> Design Engr,
> DCM Technologies,
> Austin, USA