Motorola MBX Series, Installation And Use Manual

Page: 57 / 116

Processor
http://www.motorola.com/computer/literature 5-7
5
make them well suited for embedded real-time applications in such areas
as communications, industrial automation, and electronic imaging.
The MBX series has two branches: one is based on Motorola’s MPC821
embedded processor, the other uses an MPC860 processor. MBX860
models offer four serial communications controllers (SCCs); MBX821
models have two SCCs and an integrated LCD controller. In other respects,
the logic design is the same for all models.
MBX series boards are offered in “standard” and “entry-level”
configurations (
Table 5-1 on page 5-5 lists the features of each). Both
standard and entry-level configurations offer integral system functions as
well as peripheral functions on a single base board. Standard
configurations furnish the additional capability of PCI/ISA expansion via
plug-in expansion modules. These modules offer numerous possibilities
for I/O expansion through FDDI (Fiber Distributed Data Interface), ATM
(Asynchronous Transfer Mode), graphics, Ethernet, or SCSI ports. The
MBX base board allows PC/104-Plus cards with a 32-bit, 33 MHz PCI
interface to be used on the same stack as PC/104 cards.
Processor
The processor chip used on MBX series boards is either an MPC860
PowerQUICC
®
( PowerPC
®
Quad Integrated Communications
Controller) microprocessor or an MPC821 Portable Systems
microprocessor. The processor is surface-mounted to the MBX board. The
MPC8xx is a single-chip microprocessor/peripheral combination that lends
itself to a variety of controller applications. It incorporates many of the
communications/networking capabilities and peripheral I/O functions
offered by the overall MBX product.
MPC860
The MPC860 processor is suited for applications involving
communications and networking systems. The CPU on the MPC860 is a
32-bit PowerPC implementation incorporating memory management units
(MMUs) and instruction/data caches. It has a real-time clock and a
communications processor module that includes serial communication
controllers (SCCs), serial management controllers (SMCs), and an