Mpc8Xx Bus Interface; Pci/Isa Interface - Motorola MBX Series Installation And Use Manual

Functional Description
MPC8 xx Bus Interface
5

PCI/ISA Interface

5-18
The pin assignments of the 8xx/COMM connector (821/COMM or
860/COMM, depending on your board configuration) are listed in
8xx/COMM Expansion Connectors on page
line functions vary according to the mode of operation selected. For further
information on the serial communications interface, refer to the MBX
Series Embedded Controller Version B Programmer's Reference Guide or
to the MPC821/MPC860 processor user's manuals as applicable.
To support TDM interfaces requiring a parallel data bus or local processor
bus interface, all MPC8xx bus interface signals (data, address, control) are
routed to the 8xx/COMM board connector (P1), the same 144-pin socket
used by the MPC8xx serial communications interface. In addition to
servicing TDM interfaces that require bus access, the 8xx/COMM
connector provides an I/O contact point for other MPC8xx-type devices.
Those devices may, in turn, send interrupts and assume the function of bus
master.
For further information on the MPC8xx bus interface, refer to the MBX
Series Embedded Controller Version B Programmer's Reference Guide or
to the MPC821/MPC860 processor user's manuals as applicable.
A significant feature of the MBX series embedded controller is the
PC/104-Plus interface, derived from the PCI QSpan device (see
page 5-4). PC/104-Plus modules, plug-compatible with both PCI
(Peripheral Component Interconnect) and ISA (Industry Standard
Architecture) buses, offer a variety of functionality as display interfaces, as
network interfaces, and in industrial I/O applications.
MBX series boards comply with PCI interface specification 2.1 (although
restricted to 32-bit mode) and support the P996.1 Standard for Compact
Embedded PC Modules. The standard dimensions for PC/104-Plus
modules are 3.6 inches by 3.8 inches, but larger sizes are not precluded.
A 120-pin socket on the MBX board (P2) interfaces with PCI Revision 2.1-
compatible modules to add any desirable function. A two-part 104-pin ISA
6-17. Note that some signal
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