IEI Technology IOWA-8522, User Manual

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IOWA-8522 Motherboard
Page 18
The Intel® ICH4 I/O controller hub comes with the following features:
PCI Local Bus Specification, Revision 2.2-compliant with support for 33 MHz
PCI operations.
ACPI Power Management Logic Support
Enhanced DMA controller, Interrupt controller, and timer functions
Integrated IDE controller supports Ultra ATA100/66/33
USB host interface with support for six USB ports; 3 UHCI host controllers; 1
EHCI high-speed (only four USB ports implemented)
USB 2.0 Host controller
Integrated LAN controller
System Management Bus (SMBus) Specification, Version 2.0 with additional
support for I
2
C devices
Supports Audio Codec ’97, Revision 2.3 specification
Low Pin Count (LPC) interface
Firmware Hub (FWH) interface support
Alert On LAN* (AOL) and Alert On LAN 2* (AOL2)
2.6.1 IDE Interface
Figure 2-9: IDE Interface
The Intel® ICH4 supports four IDE hard disks and ATAPI devices. PIO IDE transfers up
to 16MB/s and Ultra ATA transfers of 100MB/s. The onboard ATA-6 controller is able to
support the following IDE HDDs. Two IDE devices can be connected to the primary IDE
channel through the IDE header on the IOWA-8522. The CompactFlash® slot on the
solder side of the IOWA-8522 is implemented through the secondary IDE channel.