82801BA Datasheet PDF - Intel

Overview
The ICH2 provides extensive I/O support. Functions and capabilities include:

   • PCI Rev 2.2 compliant with support for 33 MHz PCI operations.
   • PCI slots (supports up to 6 Req/Gnt pairs)
   • 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 4 USB ports; 2 host controllers
   • Integrated LAN Controller
   • System Management Bus (SMBus) with additional support for I2C devices
   • AC’97 2.1 Compliant Link for Audio and Telephony codecs (up to 6 channels)
   • Low Pin Count (LPC) interface
   • Firmware Hub (FWH) interface support
   • Alert On LAN* (AOL) and Alert On LAN 2 (AOL2)*