User guide

36
M5000 Series: User Guide
Issued June 20, 2007
PMC Subsystem
4.1 Introduction
The PMC subsystem is composed of two 3.3V signalling PMC sites and is located on two PCI(-X)
segments called the Secondary and Tertiary PCI Segments. The connection between the two PCI(-
X) segments is provided by a PCI-X to PCI-X bridge.
FIGURE 4-1
PMC
Subsystem
Block Diagram
The factory settings of the board switch configuration allows the bus frequency of the PCI-X
segments to be automatically configured to the frequency used by a PMC card insterted into it, and
by the limitation set with dip-switches 1 and 4. See “PCI-X Capability Selection for PMC Slots” on
page 17.
PMC Power
• Max current per PMC for 3.3V power supply : 3A
• Max current per PMC for 5V power supply : 3A
• Max current per PMC for V(I/O) power supply : 2A
PMC PMC
PCI/PCI-X
(33-133MHz, 64bit)
PCI/PCI-X
(33-133MHz, 64bit)
P0P0 P2P2
P2IO
P0IO
PLX
6540
PCI to PCI Bridge