Maxim Integrated MAXQ7667 - Manual (Page 225)

Command 08h—Get Loader Version
Command 09h—Get Utility ROM Version
Command 0Ah—Set Word/Byte Mode Access
The mode byte should be 0 to set byte access mode or 1 to set word access mode. The current access mode is returned in the sta-
tus flag byte by command 04h, as well as a flag to indicate whether word access mode is supported by this particular bootloader. In
byte access mode, the range of memory that can be accessed is 0-0xFFFF bytes or 0-0x7FFF words. In word access mode, the range
of memory that can be accessed is 0-0x1FFFF bytes or 0-0xFFFF words. Essentially the word access mode allows a larger range of
memory access.
Command 0Dh—Get ID Information
For the MAXQ7667, the information returned by this command is a zero-terminated ROM banner string.
13.3.2 Family 1 Commands: Load Variable Length (Password Protected)
Command 10h—Load Code Variable Length
This command programs (Length) bytes/words of data into the program flash starting at address (AddressH:AddressL), with the fol-
lowing restrictions.
• In byte mode, if the starting address is on an odd word boundary (such as 0001), the low bit will be changed to zero to make it an
even word address.
• In byte mode, if an odd number of bytes is input, the data will be padded out with a 00 to make it an even number.
Command 11h—Load Data Variable Length
This command writes (Length) bytes/words of data into the data SRAM starting at address (AddressH:AddressL).
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MAXQ7667 User’s Guide
I/O Byte 1 Byte 2
Input 08h
Output VersionL VersionH
I/O Byte 1 Byte 2
Input 09h
Output VersionL VersionH
I/O Byte 1 Byte 2
Input 0Ah Mode
Output
I/O Byte 1 (Variable)
Input 0Dh
Output Device dependent information
I/O Byte 1 Byte 2 Byte 3 Byte 4 (Length) Bytes/Words
Input 10h Length AddressL AddressH Data to load
Output
I/O Byte 1 Byte 2 Byte 3 Byte 4 (Length) Bytes/Words
Input 11h Length AddressL AddressH Data to load
Output