Sun Microsystems Ultra 80 Service Manual page 256

TABLE C-12
Figure
Reference
5
6
7
input (stereo)
(Internal/optional)
FIGURE C-8
The audio card connector is a dual-position, standard-edge connector whose features
include:
-28 Sun Ultra 80 Service Manual • March 2000
Audio Card Features (Continued)
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
CD-ROM drive
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. 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
speaker
4
5
Line Out
Line level out
mute control
(stereo)
6
Headphone
Headphone
mute control
out (stereo)