User`s guide

IDE Interface
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The DesotoE2 is responsible for:
• Managing power application and removal to individual slots
• Properly resetting newly added PCI boards prior to bringing the board online
• Managing connection and disconnection of the PCI signals between the PCI bus
and the add-in board
• Managing seamless addition and removal of individual PCI add-in boards without
impacting bus functionality
IDE Interface
The Open South Bridge (OSB4) acts as a PCI-based fast IDE controller. The controller
supports programmed I/O and bus master transfers. While the OSB4 supports two IDE
channels, the baseboard uses only the primary IDE channel and provides a single 40-pin
IDE connector.
USB Interface
The baseboard provides a dual external USB connector for the back panel of a server
system. The connector is defined by the USB Specification, Revision 1.0. Both ports
function identically with the same bandwidth.
Network Interface Controller (NIC)
The baseboard supports a 10BASE-T/100BASE-TX network subsystem based on the
Intel 82559 Fast Ethernet Multifunction PCI/CARDBus controller. The Intel 82559
controller is a highly integrated PCI LAN controller in a 196-pin Ball Grid Array (BGA)
supporting 10 or 100 Mbps fast Ethernet networks.
Supported network features include:
• Glueless 32-bit PCI Bus Master Interface compatible with the PCI Local bus
Specification
• 82596-like chained memory structure with improved dynamic transmit chaining for
enhanced performance