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PCI bus interface
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Data buffering
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System Management Mode (SMM) support
Intel 82371EB PCI ISA IDE Xccelerator (PIIX4E)
The PIIX4E is a multifunction PCI device implementing the
PCI-to-ISA bridge, PCI IDE functionality, universal serial
bus (USB) host/hub functions, and enhanced power
management. The PIIX4E comes in a 324-pin package and
provides the following features:
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Multifunction PCI-to-ISA bridge
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Supports PCI bus at 33 MHz
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Supports full ISA bus
B-6 System Specifications
Asynchronous coupling to the host-bus frequency
Supports six PCI bus masters in addition to the host
and PCI-to-ISA I/O bridge
Data streaming support from PCI-to-DRAM
PCI parity generation support
Supports concurrent host, PCI, and AGP
transactions to main memory
Supports host-to-DRAM, PCI0-to-DRAM, and
PCI1/AGP-to-DRAM read buffering
DRAM write buffer with read-around-write
capability
AGP dedicated inbound/outbound FIFOs (133/66
MHz)
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