
Debug Module
Freescale Semiconductor
36-5
Therefore, loading a register to perform a specific function that shares hardware resources is destructive
to the shared function. For example, if an operand address breakpoint is loaded into the debug module, a
BDM command to access memory overwrites an address breakpoint in ABHR. If a data breakpoint is
configured, a BDM write command overwrites the data breakpoint in DBR.
Revision B added hardware registers to eliminate these shared functions. The BAAR is used to specify bus
attributes for BDM memory commands and has the same format as the LSB of the AATR. The registers
containing the BDM memory address and the BDM data are not program visible.
36.3.2
Configuration/Status Register (CSR)
The CSR defines the debug configuration for the processor and memory subsystem and contains status
information from the breakpoint logic. CSR is write-only from the programming model. It can be read
from and written to through the BDM port. CSR is accessible in supervisor mode as debug control register
0x00 using the WDEBUG instruction and through the BDM port using the
RDMREG
and
WDMREG
commands.
Table 36-4. Shared BDM/Breakpoint Hardware
Register
BDM Function
Breakpoint Function
AATR
Bus attributes for all memory commands
Attributes for address breakpoint
ABHR
Address for all memory commands
Address for address breakpoint
DBR
Data for all BDM write commands
Data for data breakpoint
DRc[4:0]: 0x00 (CSR)
Access: Supervisor write-only
BDM read/write
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
BSTAT
FOF
TRG
HALT BKPT
HRL
DBT
BKD
PCD
IPW
W
Reset
0
0
0
0
0
0
0
0
1
0
0
1
1
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
MAP
TRC
EMU
DDC
UHE
BTB
0
NPL
IPI
SSM
0
SPD
FDBG DBGH
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 36-2. Configuration/Status Register (CSR)
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...