Serial Communication Interface; Physical Interface - Denon DN-C635 Service Manual

Revision1.0
Date 2003-01-28
1

Serial communication interface

1.1 Physical interface

a) DN-C635 has pin Dsub female connector for serial interface.
b) Table 1 indicates pin assignment of connector signals. RS-232C and RS-422A can be selected with
software switch on DN-C635.
Terminal #
1
2
3
4
5
6
7
8
9
c) Figure 1 indicates diagram of RS232C and RS422A.
RS-232C
CPU
RS-232C
Signal I/O
NC -
TxD O
RxD I
NC -
S.GROUND - S.GROUND
NC -
NC -
NC -
NC -
Table 1. Pin Assignment
TXD
RXD
Figure 1. Serial Driver/Receiver
DN-C635 Serial Interface Specification
RS-422A
Signal I/O
NC -
TxD- O
RxD I
NC -
-
NC -
TXD O
RXD- I
NC -
RS-422A
CPU
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TXD+
TXD-
RXD+
RXD-