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MC9S12E128CFUE Datasheet, PDF (499/606 Pages) Freescale Semiconductor, Inc – MC9S12E128 Data Sheet | |||
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Chapter 16 Debug Module (DBGV1)
16.4.2.5.8 Inside Range (A ⤠address ⤠B)
In the inside range trigger mode, if the match condition for A and B happen on the same bus cycle, both
the A and B ï¬ags in DBGSC are set and a trigger occurs. If a match condition on only A or only B occurs
no ï¬ags are set. If TRGSEL = 1, the inside range is accurate only to word boundaries. If TRGSEL = 0, an
aligned word access which straddles the range boundary will cause a trigger only if the aligned address is
within the range.
16.4.2.5.9 Outside Range (address < A or address > B)
In the outside range trigger mode, if the match condition for A or B is met, the corresponding ï¬ag in
DBGSC is set and a trigger occurs. If TRGSEL = 1, the outside range is accurate only to word boundaries.
If TRGSEL = 0, an aligned word access which straddles the range boundary will cause a trigger only if the
aligned address is outside the range.
16.4.2.5.10 Control Bit Priorities
The deï¬nitions of some of the control bits are incompatible with each other. Table 16-25 and the notes
associated with it summarize how these incompatibilities are managed:
⢠Read/write comparisons are not compatible with TRGSEL = 1. Therefore, RWAEN and RWBEN
are ignored.
⢠Event-only trigger modes are always considered a begin-type trigger. See Section 16.4.2.8.1,
âStoring with Begin-Trigger,â and Section 16.4.2.8.2, âStoring with End-Trigger.â
⢠Detail capture mode has priority over the event-only trigger/capture modes. Therefore, event-only
modes have no meaning in detail mode and their functions default to similar trigger modes.
Table 16-25. Resolution of Mode Conï¬icts
Mode
Normal / Loop1
Tag
Force
A only
A or B
A then B
Event-only B
1
A then event-only B
2
A and B (full mode)
5
A and not B (full mode)
5
Inside range
6
Outside range
6
1 â Ignored â same as force
2 â Ignored for comparator B
3 â Reduces to effectively âB onlyâ
4 â Works same as A then B
5 â Reduces to effectively âA onlyâ â B not compared
6 â Only accurate to word boundaries
Detail
Tag
Force
1, 3
3
4
4
5
5
6
6
MC9S12E128 Data Sheet, Rev. 1.07
Freescale Semiconductor
499
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