BUSY=DONE
Message interface command request
| MN | Message number 0x01 - 0x20 = Valid message numbers. The message object in the message RAM is selected for data transfer. 0x00 = Not a valid message number. This value is interpreted as 0x20.[1] 0x21 - 0x3F = Not a valid message number. This value is interpreted as 0x01 - 0x1F.[1] |
| RESERVED | reserved |
| BUSY | BUSY flag 0 (DONE): Done. Set to zero by hardware when read/write action to this Command request register has finished. 1 (BUSY): Busy. Set to one by hardware when writing to this Command request register. |
| RESERVED | Reserved |