Command/result formats: command sequence – Freescale Semiconductor ColdFire MCF52210 User Manual
Page 524
Debug Module
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
28-28
Freescale Semiconductor
Command/Result Formats:
Command Sequence:
Figure 28-23.
READ
Command Sequence
Operand Data:
The only operand is the longword address of the requested location.
Result Data:
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.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
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 28-22.
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