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MC68360 USER’S MANUAL
SECTION 6
SYSTEM INTEGRATION MODULE (SIM60)
The QUICC's system integration module (SIM60) consists of a number of functions that con-
trol system startup, system initialization, the external system bus, and the external system
peripherals. The SIM60 functions include the following:
Module Base Address Register (MBAR)
System Configuration and Protection
New Low-Power Standby Modes with Slow-Go Option
Clock Synthesizer with Skew Elimination
Breakpoint Logic
Slave Mode Including MC68040 Companion Mode
External Bus Interface (EBI) Control
Memory Controller Supports Eight Banks of DRAM, SRAM, EPROM, or Peripherals
Dynamic Bus Sizing
External Master Support
Bus Arbitration
IEEE 1149.1 Test Access Port
6.1 MODULE OVERVIEW
The SIM60 on the QUICC device is an enhanced version of the SIM40 that is implemented
on another M68300 family device called the MC68340. The italicized items show the main
areas of enhancement. To a large extent, the other features are still compatible with the
older SIM40.
The MBAR provides the base address for all accesses to the SIM60 and every other on-chip
resource.
The system configuration and protection function controls the overall system configuration
and provides various monitors and timers, including the internal bus monitor, double bus
fault monitor, spurious interrupt monitor, software watchdog timer, periodic interrupt timer,
low-power stop support, and freeze support.
The clock synthesizer generates the clock signals used by the SIM60 as well as other mod-
ules and external devices. This circuitry can generate the system clock from an inexpensive
32.768-khz watch crystal.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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