Freescale Semiconductor MCF54455 Reference Manual page 878

Command Sequence:
READ (B/W)
??? 'NOT READY'
READ (LONG)
??? 'NOT READY'
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.
34.4.1.5.4 Write Memory Location (
Write data to the memory location specified by the longword address. BAAR[TT,TM] defines address
space. Hardware forces low-order address bits to 0s for word and longword accesses to ensure that word
addresses are word-aligned and longword addresses are longword-aligned.
Freescale Semiconductor
MS ADDR LS ADDR
'NOT READY'
MS ADDR LS ADDR
'NOT READY'
Figure 34-26.
READ
WRITE
READ
XXX
MEMORY
'NOT READY'
LOCATION
NEXT CMD
RESULT
XXX
BERR
READ
MEMORY
'NOT READY'
LOCATION
MS RESULT
BERR
Command Sequence
)
Debug Module
NEXT CMD
'NOT READY'
XXX
XXX NEXT CMD
LS RESULT
XXX NEXT CMD
'NOT READY'
34-36