Datasheet

Debug Support
15-36 MCF5206e USER’S MANUAL MOTOROLA
DDATA[0] bit.
000x = no breakpoints enabled
001x = waiting for level 1 breakpoint
010x = level 1 breakpoint triggered
101x = waiting for level 2 breakpoint
110x = level 2 breakpoint triggered
This breakpoint status is also output on the DDATA port when the bus is not displaying Cold-
Fire CPU core captured data. A write to the TDR resets this field.
FOF–Fault-on-Fault
If this read-only status bit is set, a catastrophic halt has occurred and forced entry into BDM.
This bit is cleared on a read of the CSR.
TRG–Hardware Breakpoint Trigger
If this read-only status bit is set, a hardware breakpoint has halted the processor core and
forced entry into BDM. This bit is cleared on a read from the CSR or when the processor is
restarted.
Halt–Processor Halt
If this read-only status bit is set, the processor has executed the HALT instruction and forced
entry into BDM. This bit is cleared on a read from the CSR or when the processor is
restarted.
BKPT–BKPT Assert
If this read-only status bit is set, the BKPT signal was asserted, forcing the processor into
BDM. This bit is cleared on a read from the CSR or when the processor is restarted.
IPW–Inhibit Processor Writes to Debug Registers
If set, this bit inhibits any processor-initiated writes to the debug module’s programming
model registers. This bit can be modified only by commands from the external development
system.
MAP–Force Processor References in Emulator Mode
If set, this bit forces the processor to map all references while in emulator mode to a special
address space, TT = 10, TM = 101 (data) and 110 (text). If cleared, all emulator-mode ref-
erences are mapped into supervisor text and data spaces.
TRC–Force Emulation Mode on Trace Exception
If set, this bit forces the processor to enter emulator mode when a trace exception occurs.
EMU–Force Emulation Mode
If set, this bit forces the processor to begin execution in emulator mode. This bit is examined
only when RSTI is negated, as the processor begins reset exception processing.
Fr
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Freescale Semiconductor, Inc.
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