SRP-X351P

SRP-X351P RS-232C Protocol Manual 1999 Sony Sound Tec. Corp ASH 24/05/04 Sony SRP-X351P RS232C Protocol Manual 1 Outline This manual describes technical information necessary to control the SRP-X351P via the 9 pin RS-232C port. It is intended solely for users of the SRP-X351P. Hexadecimal numbers are shown in italics with an ”H” suffix. Example: 18 (decimal) = 12H (hexadecimal) 2 Physical Connection The SRP-X351P uses a D-Sub9 male connector for communication via RS-232C. The pin assignments are shown below: 1 2 3 4 5 6 7 8 9 N.C. TXD (Input to SRP-x300) RXD (Output from SRP-x300) Connected to 6 in SRP-x300 GND Connected to 4 in SRP-x300 Connected to 8 in SRP-x300 Connected to 7 in SRP-x300 N.C. 1 2 3 4 5 6 7 8 9 Communication settings for RS-232C The SRP-X351P uses the following communication settings: Communication mode Character length Parity Stop bit length Bit order Baud rate 3 Provisions for communication Acknowledge (ACK) , No Acknowledge (NAK) When the SRP-X351P receives a defined command, it transmits ACK and when the : : : half duplex mode (asynchronous) 8bit : odd parity 1bit : LSB first : 9600bps 2 Sony SRP-X351P RS232C Protocol Manual SRP-X351P can not receive a command normally, it transmits NAK. Commands The controller should transmit a command after receiving ACK or NAK. Time out (1) When there is no response from the SRP-X351P after 100ms of sending a command, the controller should transmit the same command again. Time out (2) The controlle...