Pioneer DVD-V8000 Owner's Manual - Page 85

English Additional Materials 09 Computer Connections The DVD-V8000 is designed with the ability to communicate with a computer using the RS-232C port's Pin 2 and Pin 3 for communication, and the 15-Pin D-Sub connector's Pin 1 or the 9-Pin D-Sub connector's Pin 5 as ground. Connections between the player and computer are as follows: Computer DVD-V8000 TxD 3 RxD RxD 2 TxD GND GND The player can accept computer commands whenever the power is turned ON. As a result, there is no need to connect control lines other than TxD and RxD. However, depending on the computer, proper control operation may not be achieved without hardware processing of CTS inputs. In such cases, DTR output can be used. Under transmit conditions, DTR is constantly output in positive (+) potential, and should be connected to the computer's CTS input. Important ¶ Immediately after turning on the player's power, wait to input commands for at least two seconds until the DTR output becomes positive (+). Commands transmitted before that interval may not be properly received, or may return errors. Commands and Status The basic protocol is for the computer to issue a command and the player return with a status. Example: Computer DVD-V8000 (1) Search for frame 1000 = (2) Execute search + (3) Finish (4) Play from frame 2000 = (5) Execute play + (6) Finish Actual commands and statuses utilize ASCII character codes. Command mnemonics are expressed as two characters. In most cases, upper case and lower case are not discriminated but upper case characters are used by convention. In order to indicate chapter numbers and speeds, arguments may ac- company commands. In this way, commands double as ter- minators for arguments. In the simplest protocol, sending a single command will cause the player to immediately execute it. The code is ap- pended as a terminator to the ends of command lines. Example: CH: Set address mode to chapter. Example: 10SE: Search for chapter 10 This unit is provided with a command buffer, so up to 32 characters worth of commands can be input consecutively. Example: 10SE 20PL: Search for chapter 10, then play until 20. In this example, when the command is received the command line is executed beginning from the first command in the buffer. The maximum command line is 32 characters. Important ¶ If a command setting autostop (e.g., PL, MF, MR) is immediately followed by another command, the next command will be executed without waiting for the completion of the earlier command. When all commands complete their execution, the player transmits the finish message (R). In the event of an error, an error code such as "E04" will be returned. Error codes take the form "Exx" where "xx" is a two-digit number. Additional Materials 09 85