MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 313

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

If a tracing session is selected by the TSOURCE bit, breakpoints are requested when the tracing session
has completed, thus if Begin aligned triggering is selected, the breakpoint is requested only on completion
of the subsequent trace (see
immediately.
If the BRK bit is set, then the associated breakpoint is generated immediately independent of tracing
trigger alignment.
8.4.7.2
If a TRIG triggers occur, the Final State is entered whereby tracing trigger alignment is defined by the
TALIGN bit. If a tracing session is selected by the TSOURCE bit, breakpoints are requested when the
tracing session has completed, thus if Begin aligned triggering is selected, the breakpoint is requested only
on completion of the subsequent trace (see
requested immediately. TRIG breakpoints are possible with a single write to DBGC1, setting ARM and
TRIG simultaneously.
8.4.7.3
If a TRIG trigger occurs after Begin aligned tracing has already started, then the TRIG no longer has an
effect. When the associated tracing session is complete, the breakpoint occurs. Similarly if a TRIG is
followed by a subsequent comparator channel match, it has no effect, since tracing has already started.
If a forced SWI breakpoint coincides with a BGND in user code with BDM enabled, then the BDM is
activated by the BGND and the breakpoint to SWI is suppressed.
8.4.7.3.1
Breakpoint operation is dependent on the state of the BDM module. If the BDM module is active, the CPU
is executing out of BDM firmware, thus comparator matches and associated breakpoints are disabled. In
addition, while executing a BDM TRACE command, tagging into BDM is disabled. If BDM is not active,
the breakpoint gives priority to BDM requests over SWI requests if the breakpoint happens to coincide
with a SWI instruction in user code. On returning from BDM, the SWI from user code gets executed.
Freescale Semiconductor
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
BRK
0
0
0
0
1
1
Breakpoints Generated Via The TRIG Bit
Breakpoint Priorities
DBG Breakpoint Priorities And BDM Interfacing
TALIGN
0
0
1
1
x
x
Table 8-41. Breakpoint Setup For CPU Breakpoints
Table
DBGBRK
MC9S12G Family Reference Manual, Rev.1.01
8-41). If no tracing session is selected, breakpoints are requested
0
1
0
1
1
0
Table
Terminate tracing and generate breakpoint immediately on trigger
Fill Trace Buffer until trigger, then breakpoint request occurs
8-41). If no tracing session is selected, breakpoints are
Fill Trace Buffer until trigger then disarm (no breakpoints)
A breakpoint request occurs when Trace Buffer is full
Start Trace Buffer at trigger (no breakpoints)
Terminate tracing immediately on trigger
Start Trace Buffer at trigger
Breakpoint Alignment
S12S Debug Module (S12SDBG)
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