Freescale Semiconductor MCF5480 - Manual (Page 260)

MCF548x Reference Manual, Rev. 3
8-10 Freescale Semiconductor
The registers in Table 8-7 are accessed through the BDM port by BDM commands, WDMREG and RDMREG ,
described in Section 8.5.3.3, “Command Set Descriptions .” These commands contain a 5-bit field, DRc,
that specifies the register, as shown in Table 8-6 .
These registers are also accessible from the processor’s supervisor programming model through the
execution of the WDEBUG instruction. Thus, the external development system and the operating system
running on the processor core can access the breakpoint hardware. It is the responsibility of the software
Table 8-6. BDM/Breakpoint Registers
DRc[4–0] Register Name Abbreviation Initial State
Section/
Page
0x00 Configuration/status register
1
1
CSR is write-only from the programming model. It can be read or written through the BDM port using the
RDMREG and WDMREG commands.
CSR 0x0020_0000 8.4.2/8-11
0x01–0x05 Reserved — — —
0x04 PC breakpoint ASID control PBAC — 8.4.3/8-14
0x05 BDM address attribute register BAAR 0x0000_0005 8.4.4/8-15
0x06 Address attribute trigger register AATR 0x0000_0005 8.4.5/8-16
0x07 Trigger definition register TDR 0x0000_0000 8.4.6/8-17
0x08 Program counter breakpoint register PBR — 8.4.7/8-20
0x09 Program counter breakpoint mask register PBMR — 8.4.7/8-20
0x0A–0x0B Reserved — — —
0x0C Address breakpoint high register ABHR — 8.4.8/8-21
0x0D Address breakpoint low register ABLR — 8.4.8/8-21
0x0E Data breakpoint register DBR — 8.4.9/8-22
0x0F Data breakpoint mask register DBMR — 8.4.9/8-22
0x10–0x153 Reserved — — —
0x14 PC breakpoint ASID register PBASID — 8.4.10/8-24
0x15 Reserved — — —
0x16 Address attribute trigger register 1 AATR1 0x0000_0005 8.4.5/8-16
0x17 Extended trigger definition register XTDR 0x0000_0000 8.4.11/8-25
0x18 Program counter breakpoint 1 register PBR1 0x0000_0000 8.4.7/8-20
0x19 Reserved — — —
0x1A Program counter breakpoint register 2 PBR2 0x0000_0000 8.4.7/8-20
0x1B Program counter breakpoint register 3 PBR3 0x0000_0000 8.4.7/8-20
0x1C Address high breakpoint register 1 ABHR1 — 8.4.8/8-21
0x1D Address low breakpoint register 1 ABLR1 — 8.4.8/8-21
0x1E Data breakpoint register 1 DBR1 — 8.4.9/8-22
0x1F Data breakpoint mask register 1 DBMR1 — 8.4.9/8-22