mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 175

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

5.4.8 Extended Trigger Definition Register (XTDR)
The XTDR configures the operation of the hardware breakpoint logic that corresponds with
the ABHR1/ABLR1/AATR1 and DBR1/DBMR1 registers within the debug module and,
in conjunction with the TDR and its associated debug registers, controls the actions taken
under the defined conditions. The breakpoint logic may be configured as a one- or two-level
trigger, where TDR[31–16] and/or XTDR[31–16] define the second-level trigger and bits
15–0 define the first-level trigger. The XTDR is accessible in supervisor mode as debug
control register 0x17 using the WDEBUG instruction and via the BDM port using the
WDMREG
31–30
29/13
28–22
12–6
28/12
27/11
26/10
25/9
24/8
23/7
22/6
21/5
20–18/
4–2
20/4
19/3
18/2
17/1
16/0
Bits
TRC
EBL
EDx
DI
EAx
EPC
PCI
Name
command.
Trigger response control. Determines how the processor responds to a completed trigger condition.
The trigger response is always displayed on PSTDDATA.
00 Display on PSTDDATA only
01 Processor halt
10 Debug interrupt
11 Reserved
Enable breakpoint. Global enable for the breakpoint trigger. Setting TDR[EBL] or XTDR[EBL]
enables a breakpoint trigger; clearing both disables all breakpoints.
Setting an EDx bit enables the corresponding data breakpoint condition based on the size and
placement on the processor’s local data bus. Clearing all EDx bits disables data breakpoints.
EDLW
EDWL
EDWU Upper data word.
EDLL
EDLM
EDUM Upper middle data byte. Low-order byte of the high-order word.
EDUU
Data breakpoint invert. Provides a way to invert the logical sense of all the data breakpoint
comparators. This can develop a trigger based on the occurrence of a data value other than the
DBR contents.
Enable address bits. Setting an EA bit enables the corresponding address breakpoint. Clearing all
three bits disables the breakpoint.
EAI
EAR
EAL
Enable PC breakpoint. If set, this bit enables the PC breakpoint.
Breakpoint invert. If set, this bit allows execution outside a given region as defined by
PBR/PBR1/PBR2/PBR3 and PBMR to enable a trigger. If cleared, the PC breakpoint is defined
within the region defined by PBR/PBR1/PBR2/PBR3 and PBMR.
Data longword. Entire processor’s local data bus.
Lower data word.
Lower lower data byte. Low-order byte of the low-order word.
Lower middle data byte. High-order byte of the low-order word.
Upper upper data byte. High-order byte of the high-order word.
Enable address breakpoint inverted. Breakpoint is based outside the range between ABLR
and ABHR.
Enable address breakpoint range. The breakpoint is based on the inclusive range defined
by ABLR and ABHR.
Enable address breakpoint low. The breakpoint is based on the address in the ABLR.
Table 5-17. TDR Field Descriptions
Chapter 5. Debug Support
Description
Programming Model
5-19