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Appendix E: Ethernet
67
Appendix E On-Board Ethernet
The Raptor AT features a built-in 10/100 Ethernet controller
(82559ER).
The 89559ER is a 32-bit PCI controller that features enhanced scatter-
gather bus mastering capabilities which enable the 82559ER to perform
high-speed data transfers over the PCI bus. The 82559ER bus master
capabilities enable the component to process high-level commands and
to perform multiple operations, thereby off-loading communication
tasks from the system CPU.
It can operate in either full duplex or half duplex mode. In full duplex
mode it adheres to the IEEE 802.3x Flow Control specification. Half
duplex performance is enhanced by a proprietary collision reduction
mechanism.
It can be enabled or disabled through jumper JP12.
The Ethernet Header connector pin-out can be seen on Table A-11.
Table E-1 Ethernet Selection
Ethernet
Selection
Enabled Disabled
JP12 1-2* 2-3
*Manufacturer's Settings.