Acknowledgment Packets; Acknowledge; No Acknowledge - Lexicon DC-2 Protocol Manual

Lexicon, Inc.
DC-2/MC-1 Serial Communications Protocol
Zone 2 Balance
Zone 2 Mute
Bass
Treble
Loudness
Tilt
Menu Background On/Off
The parameter definitions for each of these parameters can be obtained by querying the DC-2/MC-1 with
the DC_CMD_GET_SYS_PARAM_BY_NAME command. The DC_RESP_SYS_PARAM_DEF will
contain the ParamId for each of the parameters. The ParamId may change with s/w version changes, but the
Parameter Name will not.

7.2 Acknowledgment Packets

Acknowledge and No Acknowledge packets are used to communicate transmission, packet and data
validation status. Both the HOST and DC-2/MC-1 can transmit and receive these packets.

7.2.1 Acknowledge

7.2.1.1 Packet Description
Application Header:
Command DC_ACK
Data Count
Application Data:
Data[0] Command
7.2.1.2 Data Description
Command:
DataType:

7.2.2 No Acknowledge

7.2.2.1 Packet Description
Application Header:
Command DC_NACK
Data Count
Application Data:
Data[0] Command
Data[1] ErrorCode
7.2.2.2 Data Description
Command:
DataType:
ErrorCode:
DataType:
Z2_BAL
Z2_MUTE
BASS
TREBLE
LOUDNESS
TILT
MENU_BKGND
0xE0
1 0x01
nn
Valid DC-2/MC-1 command as defined in Appendix A Command Codes.
0xE1
2 0x02
nn
nn
Valid DC-2/MC-1 command as defined in Appendix A Command Codes.
Error code as defined in Appendix B Error Codes.
Printed on: 10/19/00
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