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Audio Subsystem
The onboard audio subsystem consists of the following:
• Intel
®
ICH9R I/O controller hub
• IDT STAC9271D audio codec
• Back panel audio connectors
• Onboard audio headers:
⎯ Intel High Definition audio front panel audio header
⎯ HD audio link header
The audio subsystem supports the following features:
• Dolby* Home Theater support
• A signal-to-noise (S/N) ratio of 95 dB
• Independent multi-streaming 7.1 audio (using the back panel audio connectors)
and stereo (using the Intel High Definition front panel audio header)
• ADAT* optical interface support from the back panel S/PDIF optical port
Related Links:
Go to the following link or pages for more information about:
• Audio drivers and utilities http://support.intel.com/support/motherboards/desktop/
• Installing the front panel audio solution, page 47
• The location of au
dio connectors, Figure 24 on page 51
Legacy Input/Output (I/O) Controller
The I/O controller features the following:
• Consumer Infrared (CIR) support
• Low pin count (LPC) interface
• One serial port interface
• Serial IRQ interface compatible with serialized IRQ support for PCI systems
• Intelligent power management, including a programmable wake up event interface
• PCI power management support