System Board
System Chipset
Chapter 2
33
Audio Chip (Analog Devices AD 1885)
The on-board audio is provided by an Analog Devices AD1885 CODEC
(AC97). The audio connections are:
• headphone/lineout output (external)
• line-in input (external)
• microphone input (external)
• CD-ROM input (internal)
• internal speaker output (internal)
The output to the internal speaker is amplified via an LM4871 audio
amplifier to provide the power level needed by the speaker.
A voltage regulator is used to provide a clean +5 volt supply for the
CODEC's analog section, the internal speaker amplifier, and the
microphone bias supply.
The
jacksense1
input of the CODEC is used to switch the audio output
from the internal speaker to the headphone/lineout jack when a cable is
plugged in the jack (this includes the keyboard's audio pass-through
cable).
Voltage dividers are provided on the line-in and CD-ROM inputs to meet
PC99 specification requirements.
Hardware Management Controller Chips
The x4000 Workstation is monitored and managed by two chips on the
SMBUS;
• The Qlogic Zircon Lite micro-controller drives the Diag LEDs and the
Power Button LED on the control panel.
• The Winbond WB782D ASIC monitors voltage levels and control fans.
• The SMBUS is a low frequency bus that communicates system state
and error information among integrated circuits..
This manual downloaded from http://www.manualowl.com
Содержание Workstation x4000
Страница 11: ...Chapter 1 11 1 System Overview This manual downloaded from http www manualowl com ...
Страница 25: ...Chapter 2 25 2 System Board This manual downloaded from http www manualowl com ...
Страница 37: ...Chapter 3 37 3 System Memory and Processors This manual downloaded from http www manualowl com ...
Страница 42: ...System Memory and Processors Processor Chapter 3 42 This manual downloaded from http www manualowl com ...
Страница 43: ...Chapter 4 43 4 System BIOS and Resources This manual downloaded from http www manualowl com ...
Страница 68: ...System BIOS and Resources System Resources Chapter 4 68 This manual downloaded from http www manualowl com ...
Страница 69: ...Chapter 5 69 5 Hardware Management Monitoring and Reporting This manual downloaded from http www manualowl com ...
Страница 81: ...Chapter 6 81 6 Power Specifications This manual downloaded from http www manualowl com ...
Страница 93: ...Chapter 7 93 7 Connector Pin Outs This manual downloaded from http www manualowl com ...
Страница 120: ...Connector Pin Outs System Board Connectors Chapter 7 120 This manual downloaded from http www manualowl com ...
Страница 121: ...Chapter 8 121 8 Mechanical Specifications This manual downloaded from http www manualowl com ...
Страница 125: ...Chapter 9 125 9 Hardware Components This manual downloaded from http www manualowl com ...
Страница 145: ...Chapter 10 143 10 Installing or Replacing Parts and Accessories This manual downloaded from http www manualowl com ...
Страница 203: ...Chapter 11 203 11 Troubleshooting This manual downloaded from http www manualowl com ...
Страница 231: ...Chapter 12 231 12 Contacting Support This manual downloaded from http www manualowl com ...