Motorola MCF5281 用户手册

29-28

MOTOROLA

 

DUMP

 does not check for a valid address; it is a valid command

only when preceded by 

NOP

, 

READ

, or another 

DUMP

 command.

Otherwise, an illegal command response is returned. 

NOP

 can

be used for intercommand padding without corrupting the
address pointer. 

The size field is examined each time a 

DUMP

 command is processed, allowing the operand

size to be dynamically altered.

Command/Result Formats:

 

15

12

11

8

7

4

3

0

Byte

Command

0x1

0xD

0x0

0x0

Result

X

X

X

X

X

X

X

X

D[7:0]

Word

Command

0x1

0xD

0x4

0x0

Result

D[15:0]

Longword

Command

0x1

0xD

0x8

0x0

Result

D[31:16]

D[15:0]