mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 73

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
These registers can be accessed through the dedicated debug serial communication channel,
or from the processor’s supervisor programming model, using the WDEBUG instruction.
2.2 Programming Model
The MCF5272 programming model consists of three instruction and register groups—user,
MAC (also user-mode), and supervisor, shown in Figure 2-2. User mode programs are
restricted to user and MAC instructions and programming models. Supervisor-mode
system software can reference all user-mode and MAC instructions and registers and
additional supervisor instructions and control registers. The user or supervisor
programming model is selected based on SR[S]. The following sections describe the
registers in the user, MAC, and supervisor programming models.
• Data breakpoint mask register (DBMR)
• Trigger definition register (TDR) can be programmed to generate a processor halt or
— Data operand address breakpoint registers (ABHR/ABLR)
— Data breakpoint register (DBR)
initiate a debug interrupt exception.
Chapter 2. ColdFire Core
Programming Model
2-5