NXP Semiconductors MCF5253, Reference Manual, Page: 401 / 648

Background Debug Mode (BDM) Interface
MCF5253 Reference Manual, Rev. 1
Freescale Semiconductor 20-31
ADDRESS[31:0]–High Address
This field contains the 32-bit address which marks the upper bound of the address breakpoint range.
20.5.2 Address Attribute Trigger Register
The AATR defines the address attributes and a mask to be matched in the trigger. The AATR value is
compared with the address attribute signals from the processor’s local high-speed bus, as defined by the
setting of the TDR. The AATR is accessible in supervisor mode as debug control register $6 using the
WDEBUG instruction and through the BDM port using the WDMREG command. The lower five bits of
the AATR are also used for BDM command definition to define the address space for memory references
as described in
Section 20.4.1.2, “Debug Module Hardware.”
Access: User write only
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
W
ADDRESS[31:0]
Reset – – – – – – – – – – – – – – – –
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
W
ADDRESS[31:0]
Reset – – – – – – – – – – – – – – – –
Figure 20-30. Address Breakpoint High Register (ABHR)
Access: User write only
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
W
RM SZM TTM TMM R SZ TT TM
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
Figure 20-31. Address Attribute Trigger Register (AATR)
Table 20-19. Address Attribute Trigger Register Field Descriptions
Field Description
15
RM
The Read/Write Mask field corresponds to the R-field. Setting this bit causes R to be ignored in address
comparisons.
14–13
SZM
The Size Mask field corresponds to the SZ field. Setting a bit in this field causes the corresponding bit in SZ
to be ignored in address comparisons.
12–11
TTM
The Transfer Type Mask field corresponds to the TT field. Setting a bit in this field causes the corresponding
bit in TT to be ignored in address comparisons.
10–8
TMM The Transfer Modifier Mask field corresponds to the TM field. Setting a bit in this field causes the
corresponding bit in TM to be ignored in address comparisons.
7
R
The Read/Write field is compared with the R/W signal of the processor’s local bus.