![Freescale Semiconductor MC9S12ZVM series Скачать руководство пользователя страница 188](http://html1.mh-extra.com/html/freescale-semiconductor/mc9s12zvm-series/mc9s12zvm-series_reference-manual_2330602188.webp)
Chapter 6 S12Z Debug (S12ZDBGV2) Module
MC9S12ZVM Family Reference Manual Rev. 1.3
188
Freescale Semiconductor
Write: Bit 7 Anytime with the exception that it cannot be set if PTACT is set. An ongoing profiling session
must be finished before DBG can be armed again.
Bit 6 can be written anytime but always reads back as 0.
Bits 5:0 anytime DBG is not armed and PTACT is clear.
NOTE
On a write access to DBGC1 and simultaneous hardware disarm from an
internal event, the hardware disarm has highest priority, clearing the ARM
bit and generating a breakpoint, if enabled.
NOTE
When disarming the DBG by clearing ARM with software, the contents of
bits[5:0] are not affected by the write, since up until the write operation,
ARM = 1 preventing these bits from being written. These bits must be
cleared using a second write if required.
Table 6-3. DBGC1 Field Descriptions
Field
Description
7
ARM
Arm Bit — The ARM bit controls whether the DBG module is armed. This bit can be set and cleared by register
writes and is automatically cleared when the state sequencer returns to State0 on completing a debugging
session. On setting this bit the state sequencer enters State1.
0 Debugger disarmed. No breakpoint is generated when clearing this bit by software register writes.
1 Debugger armed
6
TRIG
Immediate Trigger Request Bit — This bit when written to 1 requests an immediate transition to final state
independent of comparator status. This bit always reads back a 0. Writing a 0 to this bit has no effect.
0 No effect.
1 Force state sequencer immediately to final state.
4
BDMBP
Background Debug Mode Enable — This bit determines if a CPU breakpoint causes the system to enter
Background Debug Mode (BDM) or initiate a Software Interrupt (SWI). If this bit is set but the BDC is not enabled,
then no breakpoints are generated.
0 Breakpoint to Software Interrupt if BDM inactive. Otherwise no breakpoint.
1 Breakpoint to BDM, if BDC enabled. Otherwise no breakpoint.
3
BRKCPU
CPU Breakpoint Enable — The BRKCPU bit controls whether the debugger requests a breakpoint to CPU upon
transitions to State0. If tracing is enabled, the breakpoint is generated on completion of the tracing session. If
tracing is not enabled, the breakpoint is generated immediately. Please refer to
for further details.
0 Breakpoints disabled
1 Breakpoints enabled
1–0
EEVE
External Event Enable — The EEVE bits configure the external event function.
explains the bit
encoding.
Table 6-4. EEVE Bit Encoding
EEVE
Description
00
External event function disabled
01
External event forces a trace buffer entry if tracing is enabled
10
External event is mapped to the state sequencer, replacing comparator channel 3
11
External event pin gates trace buffer entries
Содержание MC9S12ZVM series
Страница 116: ...Chapter 2 Port Integration Module S12ZVMPIMV1 MC9S12ZVM Family Reference Manual Rev 1 3 116 Freescale Semiconductor ...
Страница 242: ...Chapter 7 ECC Generation Module SRAM_ECCV1 MC9S12ZVM Family Reference Manual Rev 1 3 242 Freescale Semiconductor ...
Страница 384: ...Chapter 10 Supply Voltage Sensor BATSV3 MC9S12ZVM Family Reference Manual Rev 1 3 384 Freescale Semiconductor ...
Страница 484: ...Chapter 13 Programmable Trigger Unit PTUV2 MC9S12ZVM Family Reference Manual Rev 1 3 484 Freescale Semiconductor ...
Страница 662: ...Chapter 17 Gate Drive Unit GDUV4 MC9S12ZVM Family Reference Manual Rev 1 3 662 Freescale Semiconductor ...
Страница 684: ...Chapter 18 LIN Physical Layer S12LINPHYV2 MC9S12ZVM Family Reference Manual Rev 1 3 684 Freescale Semiconductor ...
Страница 740: ...Chapter 19 128 KB Flash Module S12ZFTMRZ128K512V2 MC9S12ZVM Family Reference Manual Rev 1 3 740 Freescale Semiconductor ...
Страница 756: ...Appendix A MCU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 756 Freescale Semiconductor ...
Страница 772: ...Appendix D LINPHY Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 772 Freescale Semiconductor ...
Страница 776: ...Appendix E GDU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 776 Freescale Semiconductor ...
Страница 788: ...Appendix I MSCAN Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 788 Freescale Semiconductor ...
Страница 790: ...Appendix J Package Information MC9S12ZVM Family Reference Manual Rev 1 3 790 Freescale Semiconductor ...