Freescale Semiconductor MCF52277 Reference Manual page 768

Debug Module
Command/Result Formats:
Byte
Command
Result
Word Command
Result
Longword Command
Result
Command Sequence:
READ (B/W)
???
READ (LONG)
???
Operand Data:
Result Data:
32-28
15 14 13 12 11
0x1
X X X X X
0x1
0x1
Figure 32-22.
READ
MS ADDR LS ADDR
'NOT READY' 'NOT READY'
MS ADDR LS ADDR
'NOT READY' 'NOT READY'
Figure 32-23.
The only operand is the longword address of the requested location.
Word results return 16 bits of data; longword results return 32. Bytes are returned
in the LSB of a word result; the upper byte is undefined. 0x0001 (S = 1) is returned
if a bus error occurs.
MCF52277 Reference Manual, Rev. 1
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0x9
A[31:16]
A[15:0]
X X X
0x9
A[31:16]
A[15:0]
D[15:0]
0x9
A[31:16]
A[15:0]
D[31:16]
D[15:0]
Command/Result Formats
READ
MEMORY
LOCATION
READ
MEMORY
LOCATION
Command Sequence
READ
6 5 4 3 2
0x0 0x0
D[7:0]
0x4 0x0
0x8 0x0
XXX
'NOT READY'
NEXT CMD
RESULT
XXX NEXT CMD
BERR 'NOT READY'
XXX
'NOT READY'
XXX NEXT CMD
MS RESULT LS RESULT
XXX NEXT CMD
BERR 'NOT READY'
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