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Motherboard Description SY-7ISA+
7
1-6 CHIPSET
The Intel ® 815E Chipset is a high-flexibility chipset designed to
extend from the basic graphics/multimedia PC platform up to the
mainstream performance desktop platform. The chipset consists of a
Graphics and Memory Controller Hub (Intel® 815E GMCH), an I/O
Controller Hub2 (ICH2) for the I/O subsystem, and a Firmware
Hub(FWH). The Intel® 815E GMCH integrates a system memory
SDRAM controller that supports a 64-bit 100/133 MHz SDRAM
array.
The Intel® 815E GMCH integrates a Display Cache SDRAM
controller that supports a 32-bit 133MHz SDRAM array for
enhanced integrated 2D and 3D graphics performance Multiplexed
with the display cache interface is an AGP controller interface to
enable graphics configuration and upgrade flexibility with the Intel®
815E chipset. The AGP interface and the internal graphics device
are mutually exclusive. When the AGP port is populated with an
AGP graphics card the integrated graphics is disabled and thus the
display cache interface is not needed.
1-6.1 The Intel® 815E Chipset System
The Intel® 815E Chipset uses a hub architecture with the Intel®
815E GMCH as the host bridge hub and the 82801BA I/O Controller
Hub2(ICH2) as the I/O hub. The ICH2 is a highly integrated
multifunctional I/O Controller Hub that provides the interface to the
PCI Bus and integrates many of the functions needed in today’ s PC
platforms. The Intel® 815E GMCH and ICH2 communicate over a
dedicated hub interface.
82801BA(ICH2) functions and capabilities include:
l PCI Rev2.2 compliant with support for 33MHz PCI
operations
l ICH2 supports up to 6 PCI/Req/Gnt pairs
l Integrated System Management Controller