BajaPPC-750 User's Manual - Emerson Network Power
BajaPPC-750 User's Manual - Emerson Network Power
BajaPPC-750 User's Manual - Emerson Network Power
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5.1 Features<br />
0002M621-15<br />
5<br />
PMC/PCI Interface<br />
The PCI Mezzanine Card (PMC) interface supports the addition of modules that<br />
can provide other functions, such as SCSI, on the <strong>BajaPPC</strong>-<strong>750</strong>. The PMC/PCI<br />
interface complies with the Peripheral Component Interconnect (PCI) bus interface<br />
standard.<br />
The <strong>BajaPPC</strong>-<strong>750</strong> uses the Motorola MPC106 to implement the +3.3/5V PMC/PCI<br />
interface, which features:<br />
Expansion Sites The <strong>BajaPPC</strong>-<strong>750</strong> has two PMC expansion sites to support two singlewidth<br />
PMC modules or one double-width PMC module. Both expansion<br />
sites support +3.3-volt or +5-volt PMC modules.<br />
NOTE. The <strong>BajaPPC</strong>-<strong>750</strong> circuit board selects +3.3-volt module power<br />
from either the VMEbus backplane or the onboard regulator,<br />
depending upon which fuse is installed. F4 selects the backplane;<br />
F3 selects the onboard regulator. Do not install both fuses<br />
at the same time. <strong>Power</strong> from either source has a 1-Amp current<br />
limit. (Spare fuses are located at F1 and F2.)<br />
Address and Data Each PMC expansion site uses 32 multiplexed address/data lines to support<br />
8-, 16-, and 32-bit transfers.<br />
Interrupts Each PMC expansion site supports the four PCI interrupt lines.<br />
Initiator/Master The MPC106 can allow the <strong>BajaPPC</strong>-<strong>750</strong> CPU to act as a PCI bus cycle<br />
initiator.<br />
Target/Slave The MPC106 can act as a PCI bus target for other initiator devices, such<br />
as PMC modules, Ethernet devices, or VMEbus controllers.