Lexicon, Inc.
MC-12 Serial Communications Protocol Printed on: 08/18/03
© 2003 Lexicon, Inc. All rights reserved. 33 of 94
MUTE State:
Value Definition Description
0 UNMUTE The user mute state is set to unmuted. The MC-12 may
still be muted for other internal reasons.
1 USER MUTE The system volume decrements by the specified user
amount as set in the OUTPUT LEVELS Menu.
2 FULL MUTE The system is fully muted.
7.3.33.3 MC-12 Response
The MC-12 will set the mute state according to the value transmitted. The MC-12 may still be full muted if
other conditions require the audio path to be muted. This is only a direct access to the user mute state.
7.3.33.4 Data Validation
The data value transmitted to the MC-12 will be verified as a valid value. If it is valid the MC-12 will
set/clear the mute and respond with an ACK Packet. If the data value is invalid the MC-12 will respond
with a DC_INVALID_DATA error NAK.
7.3.34 Set Output Level Adjustments (MC-1)
This command is not supported by the MC-12.
7.3.35 Send Display String Command (MC-12, MC-1)
This command allows the Host to send a 40 character string to the MC-12 for display on the OSD and Front
Panel Display.
7.3.35.1 Packet Description
Application Header:
Command DC_CMD_SET_DISPLAY_STR 0x33
Data Count Number of characters in the
DisplayStr + 2
nn
Application Data:
Data[0] DisplayFlags nn
Data[1]-Data[DataCount-1] DisplayStr ch ch ch … 0x00
7.3.35.2 Data Description
Display Command Flags:
Word Bit Definition
0 0 FPD only: If set TRUE, the display string will only be sent to the FPD device for display.
0 1 Undefined.
0 2 Undefined.
0 3 Undefined.
0 4 Undefined.
0 5 Undefined.
0 6 Undefined.
0 7 Undefined.
Display String:
Data Type: Null (0x00) terminated ASCII character string.
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