User guide

42
M5000 Series: User Guide
Issued June 20, 2007
Extension Subsystem
5.1 Introduction
The Extension Subsystem is composed of VME, RACEway and mezzanine connections. All the
devices are located on a private 64-bit, 33MHz, 5V signaling, PCI only segment. This PCI segment
is called the Quaternary PCI Segment.
A PCI6540 universal PCI-X to PCI-X bridge connects the Quaternary PCI Segment with the
Tertiary PCI Segment.
FIGURE 5-1
Extension
Subsystem
PCI
(33MHz, 64bit, 5V)
PXB
++
PXB
++
UNIV
IID
UNIV
IID
MEZZMEZZ
PLX
6540
PCI-X to PCI-X Bridge
PCI/PCI X
(33 133MHz, 64bit)