User manual LEXICON RS-232 REV 0

[. . . ] patents and other intellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited. This document should not be construed as a commitment on the part of Harman Specialty Group. [. . . ] HOST Command list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3-4-2. Specific Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Request and Status Response Data Packets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3-5-1. HOST Status request and Status Response/feedback list AST Layer: 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3-5-2. HOST Status request and Status Response/feedback list AST Layer: 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3-5-3. HOST Status request and Status Response/feedback list AST Layer: 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Special Status request and Status Response list AST Layer: None. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Data Packet COMMAND List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Purpose This document was written as a reference specification for the Lexicon RT-20 Universal Disc Player RS-232 interface. 1-2. References Refer to the RT-20 User Guide for information about the RS-232 connector and RT-20 functionality. Overview The RT-20 RS-232 interface has been designed as a Master-Slave communication protocol, in which the RT-20 is the slave device. The Master-system controller is referred to as the HOST device. 2-2. Block Diagram RT-20 (SLA Device) VE HOST (Master- System Controller) RS232C cable (straight) Connector D-SUB (9pin, male) 2-3. RT-20 RS-232 Connector Pin Definition The RT-20 serial RS-232 connector is a male 9-pin D-sub connector. Detailed Description The RS-232 hardware interface specification between the HOST and the RT-20 is described below. 3-1. Physical connection HOST RT-20 TxD RxD GND RxD TxD GND (Serial Port settings) Baud Rate : 9600bps Data Bits : 8bit Parity : None Stop bit : 1bit Handshaking : None 3-2. Transmission data packet formats 3-2-1. Transmission data packets from the HOST to the RT-20 There are two kinds of transmission data packets that are described below. Command Packets The Command Packets are provided for the Host Controller to request the RT-20 to perform a specific action. Start character : '@' COMMAND : see "Data Packet COMMAND List"on page 16 End character (CR) : 0Dh S tart `@ ' CO M M AND E nd 0D h 3-2-1-2. Status Request Packets The Status Request packets are provided for the Host Controller to request the RT-20 to report specific operating statuses. Start character : '@' Request status : see "Status Request and Status Response Data Packets" on page 11 Request character : `?' End character (CR) : 0Dh S tart `@ ' 9 R equest status `?' 0D h 1 E nd 4 3-2-2. [. . . ] HOST Status request and Status Response/feedback list Send Slave status COUNTER "TIM:?" AST Layer: 3 example Expected reply from Host TIME (DVD, DVD-Audio) "TIH:H. MM. SS" TIME (CD, SACD, MP3, VCD) "TIM:MMM. SS" 12 3-5-4. Special Status request and Status Response list Status request Layer1 Disable. Enable. AST Layer: None Status answer and feedback Layer2 Layer3 send data Disable. "AST:7" Auto status feedback "AST:?" Status request Read Version Number "RV0:?" "RV1:?" "RV2:?" "RV3:?" Status answer and feedback RS-232C Soft Version "VR0:????????????" B/E Soft Version "VR1:????????????" Panel Soft Version "VR2:????????????" AUDIO DSP Soft Version "VR3:????????????" 13 3-6. [. . . ]