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Fully synchronous PCI bus interface
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Data buffering
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System Management Mode (SMM) compliant
Intel 82371AB PCI ISA IDE Xccelerator (PIIX4)
The PIIX4 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 PIIX4 comes in a 324-pin package that
features the following:
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USB controller
C-6 System Specifications
PCI-to-DRAM access greater than 100 MB/seconds
Supports five PCI bus masters in addition to the
host and PCI-to-ISA I/O bridge
Delayed transactions
PCI parity checking and generation support
Supports host-to-DRAM, PCI-to-DRAM, and
AGP-to-DRAM write-data buffering
Supports write-combining for host-to-PCI burst
writes
Supports concurrent host, PCI, and AGP
transactions to main memory
Multifunction PCI-to-ISA bridge
Supports PCI bus at 33 MHz
Supports full ISA or extended I/O bus
Supports two USB ports
Supports legacy keyboard and mouse
Supports UHCI design guide, revision 1.1 interface
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