Microcontroller User's Manual

MOTOROLA Chapter 30. Chip Configuration Module (CCM) 30-1
Chapter 30
Chip Configuration Module (CCM)
The chip configuration module (CCM) controls the chip configuration and mode of
operation for the MCF5282.
30.1 Features
The CCM performs these operations.
• Selects the chip operating mode:
— Master mode
— Single-chip mode
• Selects external clock or phase-lock loop (PLL) mode with internal or external
reference
• Selects output pad drive strength
• Selects boot device and data port size
• Selects bus monitor configuration
• Selects low-power configuration
• Selects transfer size function of the external bus
• Selects processor status (PSTAT) and processor debug data (DDATA) functions
• Selects BDM or JTAG mode
30.2 Modes of Operation
The CCM configures the chip for two modes of operation:
• Master mode
• Single-chip mode
The operating mode is determined at reset and cannot be changed thereafter.