Automatic Negotiation; External Cables; Audio Card And Connector; Table C-6 Audio Card Features - Sun Microsystems Sun Blade 1000 Service Manual

C.1.14.1

Automatic Negotiation

Automatic negotiation controls the Ethernet (TPE) cable when a connection is
established to a network device. Automatic negotiation detects the various modes
that exist in the linked partner and advertises its own abilities to automatically
configure to the highest performance mode: 10BASE-T, 100BASE-TX, or 100BASE-T4
in half- and full-duplex modes.
C.1.14.2

External Cables

The RJ-45 Ethernet port supports a Category 5, UTP cable for the 100BASE-T, and a
Category 3, 4, or 5 UTP cable for the 10BASE-T operation.
Note – The maximum cable segment lengths for the 100BASE-TX and 10BASE-TX
are 109 yards (100 meters) and 1094 yards (1000 meters), respectively.
C.1.15

Audio Card and Connector

An audio card provides various audio applications from telephone-quality speech to
CD-quality music. The audio card supports four jacks of identical type: line in, line
out, headphone out, and microphone in. The following table lists the major features
of the audio card. The following figure illustrates a functional block diagram of the
audio card.
TABLE C-6
Figure
Reference
1
2
3
Audio Card Features
Feature
Stereo line level
Stereo microphone
input
CODEC mono-output
Description
Attenuated by a resistor divider network and then
fed into the line inputs of the CODEC.
Buffered by a non inverting operational amplifier
(one operational amplifier for the left channel and
one operational amplifier for the right channel). The
left and right outputs are then fed into the left and
right Mic. Inputs of the CODEC. A filtered +5 VDC
signal is fed to the signal inputs.
Fed into an active graphic equalizer to add bass
boost and mid-range attenuation. Equalizer output
is amplified and routed to the front mounted 16-
ohm, 68-mm speaker.
Appendix C Functional Description C-37