User manual LEXICON MC-8 V2.0 SERIAL PROTOCOL DEFINITION REV 1-7

[. . . ] MC-8/MC-8B Serial Protocol Definition Software Version 2. 0 Protocol Version: Major Rev 1 Minor Rev 7 NOTE: The Parameter ID list in the rear pages of this document identifies specific commands to the version 2. 00 software. However, the descriptions and information in the rest of the document apply to all versions of the software currently released. Lexicon MC-8 Serial Communications Protocol "Lexicon" and the Lexicon logo are registered trademarks of Harman International Industries. patent numbers and other worldwide patents issued and pending. Windows® is a registered trademark of Microsoft Corporation. [. . . ] This is only a direct access to the user mute state. 6. 3. 9. 4 Data Validation The data value transmitted to the MC-8 will be verified as a valid value. If it is valid the MC-8 will set/clear the mute and respond with an ACK Packet. If the data value is invalid the MC-8 will respond with a DC_INVALID_DATA error NAK. 6. 3. 10 Send Display String Command This command allows the Host to send a 40 character string to the MC-8 for display on the OSD and Front Panel Display. 6. 3. 10. 1 Packet Description Application Header: Command Data Count Application Data: Data[0] Data[1]-Data[DataCount-1] 6. 3. 10. 2 Data Description Display Command Flags: Word 0 0 0 0 0 0 0 0 Bit 0 1 2 3 4 5 6 7 Definition FPD only: If set TRUE, the display string will only be sent to the FPD device for display. Undefined. DC_CMD_SET_DISPLAY_STR 0x33 Number of characters in the nn DisplayStr + 2 DisplayFlags DisplayStr nn ch ch ch . . . 0x00 16 Lexicon MC-8 Serial Communications Protocol Display String: Data Type: Max Length: Null (0x00) terminated ASCII character string. 40 Characters. 6. 3. 10. 3 MC-8 Response The display string is sent to the OSD and Front Panel Display. The MC-8 will ACK when completed with this command. 6. 3. 10. 4 Data Validation: If a string length exceeds the 40 character maximum the string will be truncated before displaying and the MC-8 will transmit a DC_NAK command with an error code DC_INVALID_DATA. 6. 3. 11 MC-8 Get Parameter Definition by Id Request to MC-8 for a Parameter Definition by Parameter Id. MC-8 will respond with "MC-8 Parameter Definition Packet". 6. 3. 11. 1 Command Packet Description Application Header: Command MC_GET_PARAM_BY_ID Data 2 Count Application Data: Data[0] ParamId(LSB) Data[1] ParamId(MSB) 6. 3. 11. 2 Data Description ParamId: Data Type: Max Value: 0x35 0x02 nn nn Unsigned 16 bit Integer Max Parameter Count as reported by the MC-8 Unit Configuration Response Packet (6. 3. 14. 2 page 22) 6. 3. 11. 3 Data Validation: If the ParamId is not a valid Id the MC-8 will respond with a NAK packet and error code DC_ INVALID_PARAM_ID. 17 Lexicon MC-8 Serial Communications Protocol 6. 3. 11. 4 Parameter Definition Response Packet The following Packet has been defined as follows for MC-8 V1. 00. Future releases may modify this definition. Application Header: Command Data Count Application Data: Data[0] Data[1] Data[2] Data[3] Data[4] Data[5] Data[6] Data[7-27] Data[28]-Data[108] Data[108] 6. 3. 11. 5 Data Description ParamId: Data Type: Max Value: MC_SYS_PARAM_DEF_PK T 110 ParamId(LSB) ParamId(MSB) ParamType MAX Value(LSB) MAX Value(MSB) MIN Value(LSB) MIN Value(MSB) CurrentValue[0 -20] Parameter Path Read Only 0x8F 0x6E nn nn nn nn nn nn nn nn nn nn. . . 0x00 nn Unsigned 16 bit Integer Max Parameter Count as reported by the MC-8 Unit Configuration Response Packet (6. 3. 14. 2 page 22) 18 Lexicon MC-8 Serial Communications Protocol ParamType: Param Type Name PARAM_TYPE_UINT8 PARAM_TYPE_UINT16 PARAM_TYPE_CSTR8 PARAM_TYPE_CSTR13 PARAM_TYPE_UINT32 PARAM_TYPE_BOOLEAN PARAM_TYPE_INT8 PARAM_TYPE_BRANCH PARAM_TYPE_INT16 PARAM_TYPE_CSTR20 Data: The data value transmitted is dependent on the ParamType, as described above. The CurrentValue is always packed starting at the CurrentValue [0] byte in the packet. For multi-byte data, the values are packed LSB first(CurrentValue [0]) to MSB(CurrentValue [0+(num bytes-1)]). For example: Setting a given signed 16 bit parameter to a value of 300 the data array would be packed as follows: Data[0] = 0xd4 Data[1] = 0xfe Data[2 - 13] = don't care. If a parameter's current value is a signed 16 bit parameter with a value of -3 the data array would be packed as follows: Data[0] = 0xfd Data[1] = 0xff Data[2 - 13] = don't care. All signed values are in the 2's compliment format. Max Value: This is a 16 bit value representing the maximum value for a parameter. Parameter values exceeding the maximum will be limited to the maximum. [. . . ] 0x00 6. 3. 29. 2 Data Description InputId: Data Type: Unsigned 8 bit Integer Description/Conversion: MC-8 Input Ids (Appendix D page 39) InputName: Data Type: Max Length: Null (0x00) terminated ASCII character string. INPUT_NAME_LENGTH defined in Protocol Constants (Appendix E page 39) 6. 3. 29. 3 MC-8 Response MC-8 will copy the InputName to the given input. 6. 3. 29. 4 Data Validation: The InputId must be a valid Input Id. If it is not the MC-8 will respond with a NAK packet and error code DC_INVALID_INPUT. [. . . ]