Description of the illustration acs_031.png
This figure shows the structure of the 6-Byte command descriptor block.
Byte 0: Group Code Bit 7 to 5, Command Code Bit 4 to 0
Byte 1: Reserved Bit 7 to 5, Command Parameters Bit 4 to 0
Byte 2 to 4: Command Parameters
Byte 5: Control Byte