Freescale Semiconductor MCF5480 - 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