Debug Module
Freescale Semiconductor
34-20
ABLR, ABLR1, ABHR and ABHR1 are accessible in supervisor mode using the WDEBUG instruction
and via the BDM port using the
WDMREG
command.
34.3.9
Data Breakpoint and Mask Registers (DBR/DBR1, DBMR/DBMR1)
The data breakpoint registers (DBR/DBR1), specify data patterns used as part of the trigger into debug
mode. DBR
n
bits are masked by setting corresponding DBMR bits, as defined in TDR.
DBR, DBR1, DBMR, and DBMR1 are accessible in supervisor mode using the WDEBUG instruction and
through the BDM port using the
WDMREG
command.
DRc[4:0]: 0x0C (ABHR)
0x0D (ABLR)
0x1C (ABHR1)
0x1D (ABLR1)
Access: Supervisor write-only
BDM write-only
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
R
W
Address
Reset – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Figure 34-11. Address Breakpoint Registers (ABLR, ABHR, ABLR1, ABHR1)
Table 34-15. ABLR and ABLR1 Field Description
Field
Description
31–0
Address
Low Address. Holds the 32-bit address marking the lower bound of the address breakpoint range. Breakpoints for
specific single addresses are programmed into ABLR or ABLR1.
Table 34-16. ABHR and ABHR1 Field Description
Field
Description
31–0
Address
High Address. Holds the 32-bit address marking the upper bound of the address breakpoint range.
DRc[4:0]: 0x0E (DBR)
0x1E (DBR1)
Access: Supervisor write-only
BDM write-only
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
R
W
Data
Reset – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Figure 34-12. Data Breakpoint Registers (DBR, DBR1)
Table 34-17. DBR, DBR1 Field Descriptions
Field
Description
31–0
Data
Data Breakpoint Value. Contains the value to be compared with the data value from the processor’s local bus as a
breakpoint trigger.
Summary of Contents for MCF54455
Page 33: ...xxviii Freescale Semiconductor ...
Page 67: ...Freescale Semiconductor 1 ...
Page 125: ...Freescale Semiconductor 1 ...
Page 145: ...Enhanced Multiply Accumulate Unit EMAC 5 21 Freescale Semiconductor ...
Page 173: ...Cache 6 28 Freescale Semiconductor ...
Page 179: ...Static RAM SRAM 7 6 Freescale Semiconductor ...
Page 207: ...Power Management 9 16 Freescale Semiconductor ...
Page 323: ...Reset Controller Module 13 8 Freescale Semiconductor ...
Page 389: ...Pin Multiplexing and Control 16 44 Freescale Semiconductor ...
Page 575: ...PCI Bus Controller 22 58 Freescale Semiconductor ...
Page 600: ...Advanced Technology Attachment ATA Freescale Semiconductor 23 25 ...
Page 601: ...Freescale Semiconductor 1 ...
Page 842: ...I2 C Interface Freescale Semiconductor 33 16 ...
Page 843: ...Freescale Semiconductor 1 ...
Page 921: ...Revision History A 6 Freescale Semiconductor ...