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Background Debug Mode (BDM)
The size field is examined each time a
size to be altered dynamically.
Command Formats:
15
Byte
X
Word
Longword
Command Sequence:
FILL (LONG)
???
'NOT READY'
FILL (B/W)
???
'NOT READY'
Operand Data:
Result Data:
29-30
FILL
12
11
0x1
X
X
X
X
X
0x1
0x1
Figure 29-27.
MS DATA
LS DATA
'NOT READY'
XXX
NEXT CMD
'ILLEGAL'
'NOT READY'
WRITE
DATA
MEMORY
LOCATION
XXX
NEXT CMD
'ILLEGAL'
'NOT READY'
Figure 29-28.
FILL
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.
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.
MCF5282 User's Manual
command is processed, allowing the operand
8
7
0xC
0x0
X
X
0xC
0x4
D[15:0]
0xC
0x8
D[31:16]
D[15:0]
Command Format
FILL
WRITE
MEMORY
LOCATION
'NOT READY'
'CMD COMPLETE'
Command Sequence
4
3
0x0
D[7:0]
0x0
0x0
XXX
'NOT READY'
NEXT CMD
'CMD COMPLETE'
XXX
NEXT CMD
BERR
'NOT READY'
XXX
NEXT CMD
XXX
NEXT CMD
BERR
'NOT READY'
MOTOROLA
0
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