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2.14.2 CD audio input connector (CN9)
All CD-ROM drives can provide analog audio signal output when
used as a music CD player. The CN9 is a connector to input CD
audio signals into the audio controller. The audio cable of your
CD-ROM drive is suitable for connection to CN9.
2.14.3 Audio power source setting (J1)
The PCM-5825 is designed to work with a single +5 V power supply
as audio interfaces usually function under +5 V. However, most
audio controllers require an independant +12 V power source since
this avoids noise interference from other digital circuits. By using
J1, the PCM-5825 audio interface can also accept +12 V power
sources for improved audio quality.
Table 2-3: Audio power source setting
* +5 V
regulated +5 V
1
2
3
1
2
3
J1
* default setting
Configuration of the audio interface is done completely via
software utilities.You don't have to set any jumpers. For furhter
information, please refer to Chapter 6 for audio setup details.
2.15 Serial ports (CN19, CN18, CN2)
The PCM-5825 offers four serial ports: three RS-232 and one RS-
232/422/485. These ports allow you to connect to any serial device
(a mouse, printers, etc.) or communication network.
2.15.1 COM1 RS-232 port (CN19)
The serial port connectors are mounted on the bottom edge of the
card. The 9-pin D-SUB connector to the left of the card is the
RS-232 port.
Chapter 2 Installation
2 1
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