Background Debug Mode (BDM)

NOTE:

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]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 29-25. DUMP Command/Result Formats

29-28

MCF5282 User’s Manual

MOTOROLA

Page 700
Image 700
Motorola MCF5282, MCF5281 user manual Dump Command/Result Formats