Maxim Integrated MAXQ7666 User Manual
Page 325
12.5.3 Family 2 Commands: Dump Variable Length (Password Protected)
Command 20h—Dump Code Variable Length
This command has a slightly different format depending on the length of the dump requested. It returns the contents of the application
flash/ROM—(LengthL) or (LengthH:LengthL) bytes/words starting at (AddressH:AddressL).
Command 21h—Dump Data Variable Length
This command has a slightly different format depending on the length of the dump requested. It returns the contents of the data
SRAM—(LengthL) or (LengthH:LengthL) bytes/words starting at (AddressH:AddressL).
12.5.4 Family 3 Commands: CRC Variable Length (Password Protected)
Command 30h—CRC Code Variable Length
This command has a slightly different format depending on the length of the CRC requested. It returns the CRC-16 value (CrcH:CrcL)
of the application flash/ROM—(LengthL) or (LengthH:LengthL) bytes/words starting at (AddressH:AddressL).
Command 31h—CRC Data Variable Length
This command has a slightly different format depending on the length of the CRC requested. It returns the CRC-16 value (CrcH:CrcL)
of the data SRAM – (LengthL) or (LengthH:LengthL) bytes/words starting at (AddressH:AddressL).
MAXQ7665/MAXQ7666 User’s Guide
12-10
I/O
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Input (to dump
< 256 bytes/words)
20h
1
AddressL
AddressH
LengthL
Input (to dump
256+ bytes/words)
20h
2
AddressL
AddressH
LengthL
LengthH
Output
CodeByte 1
CodeByte 2
• • •
CodeByte N, where N = dump length
I/O
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Input (to dump
< 256 bytes/words)
21h
1
AddressL
AddressH
LengthL
Input (to dump
256+ bytes/words)
21h
2
AddressL
AddressH
LengthL
LengthH
Output
DataByte 1
DataByte 2
• • •
DataByte N, where N = dump length
I/O
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Input (to CRC
< 256 bytes/words)
30h
1
AddressL
AddressH
LengthL
Input (to CRC
256+ bytes/words)
30h
2
AddressL
AddressH
LengthL
LengthH
Output
CrcH
CrcL
I/O
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Input (to CRC
< 256 bytes/words)
31h
1
AddressL
AddressH
LengthL
Input (to CRC
256+ bytes/words)
31h
2
AddressL
AddressH
LengthL
LengthH
Output
CrcH
CrcL
Maxim Integrated