mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 536

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

Version 1 ColdFire Debug (CF1_DEBUG)
22.4.1.5.6
FILL_MEM{_WS} is used with the WRITE_MEM{_WS} command to access large blocks of memory.
An initial WRITE_MEM{_WS} is executed to set up the starting address of the block and write the first
datum. If an initial WRITE_MEM{_WS} is not executed before the first FILL_MEM{_WS}, an illegal
command response is returned. The FILL_MEM{_WS} command stores subsequent operands. The initial
address is incremented by the operand size (1, 2, or 4) and saved in a temporary register. Subsequent
WRITE_MEM{_WS} commands use this address, perform the memory write, increment it by the current
operand size, and store the updated address in the temporary register. If the with-status option is specified,
22-44
Write memory specified by debug address register, then
increment address
Write memory specified by debug address register with
status, then increment address
FILL_MEM.sz, FILL_MEM.sz_WS
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
host →
host →
host →
host →
host →
host →
target
target
target
target
target
target
0x12
0x16
0x1A
0x13
0x17
0x1B
data[31-24]
data[31-24]
data[15-8]
data[15-8]
data[7-0]
data[7-0]
Memory
Memory
Memory
Memory
Memory
Memory
host →
host →
host →
host →
host →
host →
target
target
target
target
target
target
D
L
Y
D
L
Y
data[23-16]
data[23-16]
data[7-0]
data[7-0]
Memory
Memory
Memory
Memory
host →
host →
host →
host →
target
target
target
target
XCSR_SB
FILL_MEM.sz_WS
target →
FILL_MEM.sz
host
D
Y
D
Y
L
L
data[15-8]
data[15-8]
Memory
Memory
host →
host →
target
target
XCSR_SB
target →
host
data[7-0]
data[7-0]
Memory
Memory
host →
host →
target
target
D
Y
D
Y
L
L
Non-intrusive
Non-intrusive
XCSR_SB
target →
host
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