Motorola MCF5282, MCF5281 user manual Aatr, Ablr, Abhr, Csr, Dbr, Dbmr, Pbr, Pbmr, Tdr, Baar

Programming Model

31	15	7	0
				AATR	Address attribute trigger register
31	15		0
				ABLR	Address low breakpoint register
				ABHR	Address high breakpoint register
31	15		0
				CSR	Configuration/status register
31	15		0
				DBR	Data breakpoint register
				DBMR	Data breakpoint mask register
31	15		0
				PBR	PC breakpoint register
				PBMR	PC breakpoint mask register
31	15		0
				TDR	Trigger definition register

Note: Each debug register is accessed as a 32-bit register; shaded fields above are not used (don’t care).

All debug control registers are writable from the external development system or the CPU via the WDEBUG instruction. CSR is write-only from the programming model. It can be read or written through the BDM port using the RDMREG and WDMREG commands.

31	15	7	0
				AATR	Address attribute trigger register
31	15		0
				ABLR	Address low breakpoint register
				ABHR	Address high breakpoint register
31	15	7	0
				BAAR	BDM address attribute register
31	15		0
				CSR	Configuration/status register
31	15		0
				DBR	Data breakpoint register
				DBMR	Data breakpoint mask register
31	15		0
				PBR	PC breakpoint register
				PBMR	PC breakpoint mask register
31	15		0
				TDR	Trigger definition register

Note: Each debug register is accessed as a 32-bit register; shaded fields above are not used (don’t care).

All debug control registers are writable from the external development system or the CPU via the WDEBUG instruction.

CSR is write-only from the programming model. It can be read or written through the BDM port using the RDMREG and WDMREG commands.

Figure 29-4. Debug Programming Model

These registers are accessed through the BDM port by the commands, WDMREG and RDMREG, described in Section 29.5.3.3, “Command Set Descriptions.” These commands contain a 5-bit field, DRc, that specifies the register, as shown in Table 29-3.

29-6 MCF5282 User’s Manual MOTOROLA