Maxim Integrated DS4830A Optical Microcontroller - Manual (Page 186)

DS4830A User’s Guide
186
22.3.6 – Command 05h – Get Supported Commands
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7
Command NOP Data Out Data Out Data Out Data Out Return
Input 05h 00h 00h 00h 00h 00h 00h
Output X X SupportL SupportH 00h 00h 3Eh
The SupportL (LSB) and SupportH (MSB) bytes form a 16-bit value that indicates which command families the
bootloader supports. If bit 0 is set to 1, it indicates that Family 0 is supported. If bit 1 is set to 1, it indicates that
Family 1 is supported. The value returned by the DS4830A is 403Fh, indicating that command families 0, 1, 2, 3, 4,
5 and E are supported. This command is not password protected.
22.3.7 – Command 06h – Get Code Size
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Command NOP Data Out Data Out Return
Input 06h 00h 00h 00h 00h
Output X X SizeL SizeH 3Eh
This command returns SizeH:SizeL, which represents the size of available code memory in words minus 1. The
DS4830A will return a value of 7FFFh, which indicates 32k words of program memory are available. This command
is not password protected.
22.3.8 – Command 07h – Get Data Size
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Command NOP Data Out Data Out Return
Input 07h 00h 00h 00h 00h
Output X X SizeL SizeH 3Eh
This command returns SizeH:SizeL, which represents the size of available data memory in words minus 1. The
DS4830A will return a value of 07FFh, which indicates 2k words of data memory are available. This command is not
password protected.
22.3.9 – Command 08h – Get Loader Version
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Command NOP Data Out Data Out Return
Input 08h 00h 00h 00h 00h
Output X X VersionL VersionH 3Eh
This command returns the device’s bootloader version. The format of the version is VersionH.VersionL. For
example, if VersionL returns 01h and VersionH returns 01h, this corresponds to bootloader version 1.1. This
command is not password protected.
22.3.10 – Command 09h – Get Utility ROM Version
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Command NOP Data Out Data Out Return
Input 09h 00h 00h 00h 00h
Output X X VersionL VersionH 3Eh
This command returns the device’s ROM code version. The format of the ROM version is VersionH.VersionL. For
example, if VersionL returns 00h and VersionH returns 01h, this corresponds to ROM version 1.0. This command is
not password protected.