MOTOROLA
MC68341 USER’S MANUAL
1- 1
SECTION 1
DEVICE OVERVIEW
The MC68341 is a member of the M68300 family of integrated processors designed
specifically for the compact disc-interactive (CD-I) market. It improves on the feature set of
the MC68340 for a more complete and cost effective integrated system solution to CD-I's
specific needs.
The MC68341 contains a 68020-based CPU32, a two channel DMA controller, two serial
channels, a timer, and a queued serial peripheral interface. The 68341's system
integration module (SIM41) contains clock circuitry, system protection, external bus
interface, timers, and additional chip selects. New to the SIM is the real time clock and an
MC68000 bus interface. The MC68000 bus interface is dynamically selectable to give a
glueless interface to peripherals and memory designed for the MC68000 while allowing
higher performance transfers using the standard 68300 bus interface. Complete code
compatibility with the MC68000 affords the designer access to a broad base of
established real-time kernels, operating systems, languages, applications, and
development tools—many oriented towards embedded control.
As a low voltage part, the MC68341V can operate with a 3.3-V power supply and is
particularly useful for battery applications. MC68341 is used throughout this document to
refer to both the low voltage and standard 5-V parts since both are functionally equivalent.
Figure 1-1 illustrates a block diagram of the MC68341.
CPU32
(68000-BASED
PROCESSOR)
TWO-CHANNEL
DMA CONTROLLER
TWO-CHANNEL
SERIAL I/O
SYSTEM
INTEGRATION MODULE
(SIM41)
SYSTEM
PROTECTION
CLOCK
SYNTHESIZER
EXTERNAL
BUS INTERFACE
BUS ARBITRATION
IEEE 1149.1 TEST
32-BIT ADDRESS BUS
TIMER
QUEUED SERIAL
PERIPHERAL
INTERFACE
INTERMODULE BUS
REAL TIME CLOCK
16-BIT DATA BUS
Figure 1-1. MC68341 Simplified Block Diagram
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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