Debug Module
MCF52235 ColdFire® Integrated Microcontroller Reference Manual, Rev. 6
31-28
Freescale Semiconductor
Command Sequence:
Figure 31-24.
WRITE
Command Sequence
Operand Data:
This two-operand instruction requires a longword absolute address that specifies
a location the data operand is written. Byte data is sent as a 16-bit word, justified
in the LSB; 16- and 32-bit operands are sent as 16 and 32 bits, respectively.
Result Data:
Command complete status is indicated by returning 0xFFFF (with S cleared)
when the register write is complete. A value of 0x0001 (with S set) is returned if
a bus error occurs.
31.4.1.5.5
Dump Memory Block (
DUMP
)
DUMP
is used with the
READ
command to access large blocks of memory. An initial
READ
is executed to
set up the starting address of the block and to retrieve the first result. If an initial
READ
is not executed
before the first
DUMP
, an illegal command response is returned. The
DUMP
command retrieves subsequent
operands. The initial address increments by the operand size (1, 2, or 4) and saves in a temporary register.
Subsequent
DUMP
commands use this address, perform the memory read, increment it by the current
operand size, and store the updated address in the temporary register.
XXX
’NOT READY’
WRITE (LONG)
???
MS ADDR
’NOT READY’
LS ADDR
’NOT READY’
WRITE
MEMORY
LOCATION
NEXT CMD
’CMD COMPLETE’
MS DATA
’NOT READY’
NEXT CMD
’NOT READY’
XXX
BERR
XXX
’NOT READY’
WRITE (B/W)
???
MS ADDR
’NOT READY’
LS ADDR
’NOT READY’
WRITE
MEMORY
LOCATION
NEXT CMD
’CMD COMPLETE’
DATA
’NOT READY’
NEXT CMD
’NOT READY’
XXX
BERR
LS DATA
’NOT READY’
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:MCF52234CVM60,
MCF52235CVM60
