Wave-Table Upgrade Board; What Is Spdif In/Out - PC Chips CMI8330 English Manual

Media Rack System Mixer
Hardware/Software Section 1- Hardware Introduction

1.6 Wave-Table Upgrade Board

For saving one I/O port and one IRQ channel, we disable MPU-401 MIDI
device as default value. If you want to output by wave-table (MPU-401 MIDI
device):
In DOS (also Windows 3.1), please run CMINIT.EXE to enable MPU-401
MIDI device.
In Windows 3.1, please add MPU-401 device drivers at first. Click on
"Drivers" icon in "Control Panel" of "Main" group. Click "Add" button and
select "ROLAND MPU-401" to add device drivers. After reboot, please click
on "MIDI Mapper"icon in "Control Panel" of "Main" group. Select item
'MPU-401 MIDI' in 'Name' and click 'Close' button.
In Windows 95 system, please run En_Disable MPU-401 MIDI device
program(MDEVSET.EXE) to enable MPU-401 MIDI device. After reboot,
click "Start" button, and then click "Control Panel" at "Settings" Menu.
Double click on the "Multimedia" icon and click "MIDI". In "Single
Instrument", select "C-Media inc. External MIDI (MPU-401)" item.

1.7 What is SPDIF IN/OUT?

SPDIF is a digital audio IN/OUT standard. It support a non-distortion stereo
44.1K 16bit digital audio transmission. The S/PDIF IN/OUT voltage level is
5Vp-p TTL level. You can get digital audio through SPDIF IN from CD-Audio
digital output or the other digital audio output (ex. Minidisc,DAT). You also
can output digital audio through SPDIF OUT to those equipments that
accepted SPDIF IN format.
This sound card's SPDIF IN function is design for non-distortion digital
recording from digital audio output of CD-ROM (or other equipments), not
for playing from these equipments. Therefore, if you want to record from your
CD-ROM digital audio output through SPDIF IN, please connect CD-ROM
analog and digital audio cable to sound card. Make sure that volume of
CD(analog audio) in mixer is ON and volume of Dig-CD(digital audio) is
OFF. Then you can playing from analog audio and recording from digital
audio for the best effect. If you turn on the volume of Dig-CD(digital audio) in
mixer, due to some CD-ROM drive design,there is noise input during
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