Lexicon, Inc.
MC-12 Serial Communications Protocol Printed on: 10/10/02
© 2002 Lexicon, Inc. All rights reserved. 14 of 92
Command:
DataType: Valid MC-12 command as defined in Appendix A Command Codes.
ErrorCode:
DataType: Error code as defined in Appendix B Error Codes.
7.3 Host Initiated Command Packets
The MC-12 serial communication protocol has been designed to respond to the following commands as
described below. Each command is transmitted to the MC-12 with the identified parameters. If the
command is successfully received and processed by the MC-12, the unit will respond with the described
response packet or action.
7.3.1 Reset Unit (MC-12, MC-1)
Commands the MC-12 to soft reset.
7.3.1.1 Command Packet Description
Application Header:
Command DC_CMD_RESET 0x10
Data Count 0 0x00
Application Data:
N/A
7.3.1.2 MC-12 Response
The MC-12 will perform an internal reset. After reset the MC-12 will go through a soft power-up
initialization. This includes transmitting the “Wakeup Notification Packet”. A soft reset does not
reinitialize the MC-12. Nonvolatile RAM is maintained.
7.3.2 Restore (MC-12, MC-1)
Commands the MC-12 to restore the system and effect parameters to the factory defaults.
7.3.2.1 Command Packet Description
Application Header:
Command DC_CMD_RESTORE_DEFAULTS 0x13
Data Count 0 0x00
Application Data:
N/A
7.3.2.2 MC-12 Response
The MC-12 will reset, clear any saved system and effect parameters in Nonvolatile RAM, and restore the
factory default system and effect parameters. After reset the MC-12 will go through a soft power-up
initialization. This includes transmitting the “Wakeup Notification Packet”.
7.3.3 MC-1 Send IR Command (MC-12, MC-1)
Transmits MC-1 IR command key codes to the MC-12.
This command has been maintained for backward compatibility to the MC-1. The MC-1 IR code
functionality has been mapped to the MC-12 IR code functionality as per the MC-1 to MC-12 IR code
table. MC-12 users should use the command described in 7.3.40 (MC-12_Send_IR_Command).
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