Marantz CC4300N - Manual (Page 29)

English
26
The unit can receive external control signals and
transmit status information by connecting a cross
cable on the market to the D-sub 9 pin connector for
RS-232C external control.
❖
Pin Assignment of the Connector
❖
RS-232C Physical Specification
❖
Data Packet
A packet contains data from 5 to 8 bytes in length. In
serial communication, ASCII code from 00h to 7fh is
used. So the HEX data are converted into ASCII code
and set to the data packet. The data packet includes
CR code (0dh) at the end.
Example 1: CD Play (Code: 20 53)
Example 2: T.SIZE (Code 20 104 08)
The unit can identify following commands on next
page.
32h 30h 31h 30h 34h 30h 38h 0dh
[2] [0] [1] [0] [4] [0] [8] CR code
8 byte
32h 30h 35h 33h 0dh
[2] [0] [5] [3] CR code
5 byte
RS-232C
6 9
1 5
External Control (Serial Interface)
RS-232C
Operations
1 NC
2 RX
3 TX
4 NC
5 GND
6 NC
7 NC
8 NC
9 NC
Cable Straight-type
Connector D-Sub 9 pin
(Female type)
Baud rate 9600bps
Data bits 8 bits
Parity None
Stop bit 1 bit
Flow control None