Desktop Board Features
Intel® X48 Express Chipset
The Intel X48 Express Chipset consists of the following devices:
•Intel X48 Express Chipset Memory Controller Hub (MCH) with Direct Media Interface (DMI) interconnect
•Intel 82801IR I/O Controller Hub (ICH9R) with DMI interconnect
The MCH provides interfaces to the processor, memory, PCI Express bus, and the DMI interconnect. ICH9R is a centralized controller for the board’s I/O paths.
Related Links:
Go to the following link for more information about the Intel X48 Express Chipset:
http://developer.intel.com/products/chipsets/index.htm
Audio Subsystem
The onboard audio subsystem consists of the following components:
•Intel® ICH9R I/O controller hub
•IDT STAC9274D audio codec
The subsystem has the following headers and connectors:
•Back panel audio connectors, including an S/PDIF optical port
•High Definition (HD) Audio front panel header that provides mic in and line out signals for front panel audio connectors
•HD Audio Link header used for HDMI video cards
•S/PDIF connector that can be used for HDMI video cards that do not work with the HD Audio Link header
The audio subsystem supports the following features:
•Dolby* Home Theater
•A
•Independent
•ADAT optical interface support via 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/
•The location of the onboard audio headers, Figure 27 on page 48
•The signal names for the Intel High Definition Audio front panel header and the HD Audio Link header, page 49
•The back panel audio connectors, Figure 28 on page 53
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