mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 199

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 6
S12S Debug Module (S12SDBGV2)
6.1
The S12SDBG module provides an on-chip trace buffer with flexible triggering capability to allow
non-intrusive debug of application software. The S12SDBG module is optimized for S12SCPU
debugging.
Typically the S12SDBG module is used in conjunction with the S12SBDM module, whereby the user
configures the S12SDBG module for a debugging session over the BDM interface. Once configured the
S12SDBG module is armed and the device leaves BDM returning control to the user program, which is
then monitored by the S12SDBG module. Alternatively the S12SDBG module can be configured over a
serial interface using SWI routines.
6.1.1
COF: Change Of Flow. Change in the program flow due to a conditional branch, indexed jump or interrupt.
BDM: Background Debug Mode
S12SBDM: Background Debug Module
DUG: Device User Guide, describing the features of the device into which the DBG is integrated.
WORD: 16 bit data entity
Data Line: 20 bit data entity
CPU: S12SCPU module
DBG: S12SDBG module
POR: Power On Reset
Freescale Semiconductor
Revision Number
02.07
02.08
02.09
Introduction
Glossary Of Terms
13.DEC.2007
09.MAY.2008
29.MAY.2008
Revision
Date
MC9S12VR Family Reference Manual, Rev. 2.2
Preliminary - Subject to Change Without Notice
Section 6.5,
“Application
Information
Sections
Affected
General
6.4.5.4
Table 6-1. Revision History
Added application information
Spelling corrections. Revision history format changed.
Added note for end aligned, PurePC, rollover case.
Summary of Changes
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