Command sequence – Freescale Semiconductor MCF5480 User Manual
Page 287

Background Debug Mode (BDM)
MCF548x Reference Manual, Rev. 3
Freescale Semiconductor
8-37
Command Sequence:
Figure 8-28.
READ
Command Sequence
Operand Data
The only operand is the longword address of the requested location.
15
12
11
8
7
4
3
0
Byte
Command
0x1
0x9
0x0
0x0
A[31:16]
A[15:0]
Result
X
X
X
X
X
X
X
X
D[7:0]
Word
Command
0x1
0x9
0x4
0x0
A[31:16]
A[15:0]
Result
D[15:0]
Longword Command
0x1
0x9
0x8
0x0
A[31:16]
A[15:0]
Result
D[31:16]
D[15:0]
Figure 8-27.
READ
Command/Result Formats
XXX
’NOT READY’
READ (LONG)
???
MS ADDR
’NOT READY’
LS ADDR
’NOT READY’
NEXT CMD
’NOT READY’
NEXT CMD
LS RESULT
READ
MEMORY
LOCATION
XXX
BERR
XXX
MS RESULT
XXX
’NOT READY’
READ (B/W)
???
MS ADDR
’NOT READY’
LS ADDR
’NOT READY’
NEXT CMD
’NOT READY’
READ
MEMORY
LOCATION
XXX
BERR
NEXT CMD
RESULT