Marantz CC4300 - Manual (Page 30)

English
26
The unit can receive external control signals by
connecting a straight cable on the market to the D-sub 9
pin connector for RS232C external control.
❖
Pin Assignment of the Connector
❖
RS232C 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
RS232C
6 9
1 5
External Control (Serial Interface)
RS232C
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