Sun Microsystems Sun Blade 1000 Service Manual page 310

TABLE C-6
Figure
Reference
4
5
6
input (stereo)
FIGURE C-12
C-38 Sun Blade 1000 and Sun Blade 2000 Service Manual • January 2002
Audio Card Features
Feature
Line output
Headphone output
Multimedia CODEC
(MMCODEC)
LINL
1
LINR
Line level
MINL
2
MINR
Microphone level
input (stereo)
Aux 1 L
3 Aux 1 R
DVD-ROM drive
(internal/optional)
Audio Card Functional Block Diagram
Description
A direct output, except E1, which enables muting of
this signal. The mute function is driven from the
codec PIO lines.
Buffered by an operational amplifier to give
headphone drive with low impedances of 16 ohms
or more. The output of the headphone out is
independently mutable, driven from codec PIO
lines.
Heart of the audio module. A single-chip, stereo,
A/D and D/A converter based on delta-sigma
conversion.
MONO_OUT
LOUT L
LOUT R
7
CODEC
LOUT L
LOUT R
EBus interface
Mono
4 speaker
5
Line out
Line level out
mute control
(stereo)
6
Headphone
Headphone
mute control
out (stereo)