mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 500

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

Version 1 ColdFire Debug (CF1_DEBUG)
22-8
1
2
3
The most significant bytes of the XCSR, CSR2, and CSR3 registers support special control functions and are writeable via
BDM using the WRITE_XCSR_BYTE, WRITE_CSR2_BYTE, and WRITE_CSR3_BYTE commands. They can be read from
BDM using the READ_XCSR_BYTE, READ_CSR2_BYTE, and READ_CSR3_BYTE commands. These 3 registers, along
with the CSR, can also be referenced as 32-bit quantities using the BDM READ_DREG and WRITE_DREG commands, but
the WRITE_DREG command only writes bits 23–0 of these three registers.
Each debug register is accessed as a 32-bit value; undefined fields are reserved and must be cleared.
The contents of the PST trace buffer is only read from BDM (32 bits per access) using READ_PSTB commands.
0x0C
0x0D
0x0E
0x1A
0x1B
0x00
0x01
0x02
0x03
0x05
0x06
0x07
0x08
0x09
0x0F
0x18
DRc
—
Configuration/status register (CSR)
Extended Configuration/Status Register (XCSR)
Configuration/Status Register 2 (CSR2)
Configuration/Status Register 3 (CSR3)
BDM address attribute register (BAAR)
Address attribute trigger register (AATR)
Trigger definition register (TDR)
PC breakpoint register 0 (PBR0)
PC breakpoint mask register (PBMR)
Address breakpoint high register (ABHR)
Address breakpoint low register (ABLR)
Data breakpoint register (DBR)
Data breakpoint mask register (DBMR)
PC breakpoint register 1 (PBR1)
PC breakpoint register 2 (PBR2)
PC breakpoint register 3 (PBR3)
PST Trace Buffer n (PSTBn); n = 0–11 (0xB)
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
Register Name
Table 22-4. Debug Module Memory Map
Width
(bits)
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
2
2
2
R/W
R/W
R/W
R/W (BDM),
R (BDM)
W (CPU)
W (CPU)
W (CPU)
W (CPU)
Access
1
1
1
W
W
W
W
W
W
W
W
W
W
W
W
(BDM),
(BDM),
(BDM),
3
0x0000_0000
0x0000_0000
0x0000_0000
0x0090_0000
0x0000_0000
0x0000_0000
0x0000_0005
0x0000_0005
0x0000_0000
Reset Value
See Section
PBR1[0] = 0
PBR2[0] = 0
PBR3[0] = 0
Undefined,
Unaffected
Undefined,
Unaffected
Undefined,
Unaffected
Undefined,
Unaffected
Freescale Semiconductor
22.4.1.5.12/22-48
22.3.10/22-27
22.3.10/22-27
22.3.2/22-12
22.3.3/22-15
22.3.4/22-18
22.3.5/22-19
22.3.6/22-20
22.3.7/22-21
22.3.8/22-24
22.3.8/22-24
22.3.9/22-26
22.3.9/22-26
22.3.8/22-24
22.3.8/22-24
22.3.8/22-24
22.3.1/22-9
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