S12S Debug Module (S12DBGV2)
MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors
195
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4-stage state sequencer for trace buffer control
— Tracing session trigger linked to Final State of state sequencer
— Begin and End alignment of tracing to trigger
6.1.4
Modes of Operation
The DBG module can be used in all MCU functional modes.
During BDM hardware accesses and whilst the BDM module is active, CPU monitoring is disabled. When
the CPU enters active BDM Mode through a BACKGROUND command, the DBG module, if already
armed, remains armed.
The DBG module tracing is disabled if the MCU is secure, however, breakpoints can still be generated.
6.1.5
Block Diagram
Figure 6-1. Debug Module Block Diagram
Table 6-2. Mode Dependent Restriction Summary
BDM
Enable
BDM
Active
MCU
Secure
Comparator
Matches Enabled
Breakpoints
Possible
Tagging
Possible
Tracing
Possible
x
x
1
Yes
Yes
Yes
No
0
0
0
Yes
Only SWI
Yes
Yes
0
1
0
Active BDM not possible when not enabled
1
0
0
Yes
Yes
Yes
Yes
1
1
0
No
No
No
No
CPU BUS
TRACE BUFFER
BUS INTERF
ACE
TRANSITION
MATCH0
STATE
COMPARATOR B
COMPARATOR C
COMPARATOR A
STATE SEQUENCER
MATCH1
MATCH2
TRACE
READ TRACE DATA (DBG READ DATA BUS)
CONTROL
SECURE
BREAKPOINT REQUESTS
CO
M
P
AR
A
T
O
R
MA
TC
H CONTR
O
L
TRIGGER
TAG &
MATCH
CONTROL
LOGIC
TAGS
TAGHITS
STATE
TO CPU
Summary of Contents for MC9S12VRP64
Page 16: ...MC9S12VRP Family Reference Manual Rev 1 3 16 NXP Semiconductors ...
Page 46: ...Device Overview S12VRP Series MC9S12VRP Family Reference Manual Rev 1 3 46 NXP Semiconductors ...
Page 236: ...S12S Debug Module S12DBGV2 MC9S12VRP Family Reference Manual Rev 1 3 236 NXP Semiconductors ...
Page 244: ...Interrupt Module S12SINTV1 MC9S12VRP Family Reference Manual Rev 1 3 244 NXP Semiconductors ...
Page 358: ...Timer Module TIM16B2CV3 MC9S12VRP Family Reference Manual Rev 1 3 358 NXP Semiconductors ...
Page 436: ...Supply Voltage Sensor BATSV2 MC9S12VRP Family Reference Manual Rev 1 3 436 NXP Semiconductors ...
Page 528: ...NVM Electrical Parameters MC9S12VRP Family Reference Manual Rev 1 3 528 NXP Semiconductors ...
Page 530: ...Package Information MC9S12VRP Family Reference Manual Rev 1 3 530 NXP Semiconductors ...
Page 531: ...Package Information MC9S12VRP Family Reference Manual Rev 1 3 NXP Semiconductors 531 ...
Page 532: ...Package Information MC9S12VRP Family Reference Manual Rev 1 3 532 NXP Semiconductors ...