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Chipset Overview
Intel's 810 chipset was developed to bring new features to value PC plat-
forms. Integrated audio and graphics eliminate the cost of discrete compo-
nents and free up space for additional peripheral cards.
features are based on the AC'97 2.1 compliant link for audio and telephony
CODECs and the onboard graphics controller chip. The main bridge of the
810 is the Graphics and Memory Controller Hub (GMCH), which enables a
66 or 100 MHz front side bus speed. An I/O Controller Hub (ICH) integrates
PCI peripherals and I/O functions with a dedicated 33 MHz PCI bus. This
hub separates the I/O devices from the GMCH for improved performance.
The 810's accelerated hub interface provides a 266 MB/sec bandwidth be-
tween the GMCH and ICH for smoother-streaming video and audio.
Graphics Memory Controller Hub (GMCH)
The GMCH is the host bridge of the 810 chipset and provides the interconnect
between the SDRAM and the rest of the system logic. It includes a system
memory DRAM controller, which supports a 64-bit 100 MHz DRAM array, and
utilizes Direct AGP (integrated AGP) technology to create vivid 2D and 3D effects
and images.
I/O Controller Hub (ICH)
The ICH is the I/O Controller Hub for the I/O subsystem and integrates many of
the functions required by today's PC platforms. It provides the interface to the
PCI Bus and communicates with the GMCH over a dedicated hub interface.
There are two versions of the ICH: the ICH and the ICH0. The P6SWA/P6SWD
has the ICH version, which supports Ultra DMA/66.
Audio Modem Riser (AMR)
AMR is a new modular specification that integrates the audio/modem functions
on the motherboard by assigning the analog I/O functions to a riser card. Inte-
gration of the audio/modem function enhances system capabilities while reduc-
ing costs. The AMR interface is based on an AC-link that is compliant with Intel's
Audio Codec '97 version 2.1 specification.
Chapter 1: Introduction
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These onboard
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