Pmcspan Expansion Mezzanine; Table 1-2. Pmcspan Models - Motorola MVME2300 Series Installation And Use Manual

The MVME2300 interfaces to the VMEbus via the P1 and P2 connectors. It
also draws +5V, +12V, and -12V power from the VMEbus backplane through
these two connectors. The +3.3V power, used for the PCI bridge chip and
possibly for the PMC mezzanine, is derived onboard from the +5V power.
Support for two IEEE P1386.1 PCI mezzanine cards is provided via eight
64-pin SMT connectors. Front panel openings are provided on the module
for the two PMC slots.
In addition, there are 64 pins of I/O from PMC slot 1 and 46 pins of I/O
from PMC slot 2 that are routed to P2. The two PMC slots may contain two
single-wide PMCs or one double-wide PMC.

PMCspan Expansion Mezzanine

An optional PCI expansion mezzanine module or PMC carrier board,
PMCspan, provides the capability of adding two additional PMCs. Two
PMCspans can be stacked on an MVME2300, providing four additional
PMC slots, for a total of six slots including the two onboard the module.
The next table lists the PMCspan models that are available for use with the
MVME2300.
Expansion Module
PMCSPAN-002
PMCSPAN-010
1-3

Table 1-2. PMCspan Models

Description
Primary PCI expansion mezzanine module.
Allows two PMC modules for the
MVME2300. Includes 32-bit PCI bridge.
Secondary PCI expansion mezzanine module.
Allows two additional PMC modules for the
MVME2300. Does not include 32-bit PCI
bridge; requires a PMCSPAN-002.
Description
1