User guide

39
Issued June 20, 2007
M5000 Series: User Guide
PCI6540 PCIX-to-PCIX Bridge
4.3 PCI6540 PCIX-to-PCIX Bridge
This Bridge has been discussed in “PCI-X to PCI-X Bridges” on page 32. What follows are details
appropriate for this particular bridge.
Power-up / Reset Configuration Options
PCI-X Capability
Both primary and secondary interfaces can be run in PCI or PCI-X modes. See “PCI-X Capability
Selection for PMC Slots” on page 11.
Secondary Port Arbiter Setup
As the only built-in arbiter present on the secondary PCI bus, the PCI6540 internal arbiter is used to
arbitrate.
Primary Interface
The primary interface of this bridge is connected to the secondary interface of the Secondary PCI
Segment bridge and to the first PMC site (PMC#1).
Secondary Interface
The secondary interface of this bridge is connected to the second PMC site (PMC#2) and the
primary interface of another PCI6540 bridge.