Command sequence – Freescale Semiconductor ColdFire MCF52210 User Manual
Page 529
Debug Module
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor
28-33
Command Sequence:
Figure 28-29.
FILL
Command Sequence
Operand Data:
A single operand is data to be written to the memory location. Byte data is sent as
a 16-bit word, justified in the least-significant byte; 16- and 32-bit operands are
sent as 16 and 32 bits, respectively.
Result Data:
Command complete status (0xFFFF) is returned when the register write is
complete. A value of 0x0001 (with S set) is returned if a bus error occurs.
28.5.3.3.7
Resume Execution (
GO
)
The pipeline is flushed and refilled before normal instruction execution resumes. Prefetching begins at the
current address in the PC and at the current privilege level. If any register (such as the PC or SR) is altered
by a BDM command while the processor is halted, the updated value is used when prefetching resumes.
If a
GO
command issues and the CPU is not halted, the command is ignored.
Command Sequence:
Figure 28-31.
GO
Command Sequence
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0
0xC
0x0
0x0
Figure 28-30.
GO
Command Format
XXX
’NOT READY’
FILL (B/W)
???
DATA
’NOT READY’
NEXT CMD
’NOT READY’
WRITE
MEMORY
LOCATION
XXX
BERR
NEXT CMD
’CMD COMPLETE’
XXX
’ILLEGAL’
NEXT CMD
’NOT READY’
XXX
’NOT READY’
FILL (LONG)
???
MS DATA
’NOT READY’
LS DATA
’NOT READY’
WRITE
MEMORY
LOCATION
XXX
BERR
NEXT CMD
’CMD COMPLETE’
XXX
’ILLEGAL’
NEXT CMD
’NOT READY’
NEXT CMD
’NOT READY’
GO
???
NEXT CMD
’CMD COMPLETE’