IMC Networks McPC 100 Mbps - Manual (Page 5)

2
NOTE
The default for all features except Auto Negotiation is "Disabled."
Jumper Settings
Feature
Jumper
Position
ON (pins)
OFF
(pins)
Factory
Default
JP2 TXLL 1-2 2-3 OFF
JP3 FXLL 1-2 2-3 OFF
AutoCross
The McPC 100Mbps includes AutoCross, a feature which automatically selects
between a crossover workstation or a straight-through/repeater hub connection
depending on the connected device.
Auto Negotiation on McPC 100Mbps
Auto Negotiation is available on the McPC 100Mbps. When Auto Negotiation is
enabled, the 100Mbps negotiates as a 100 Mbps Full-Duplex device. When the
device to which the McPC 100Mbps is connected can operate at 100Mbps Full-
Duplex, a link will be established.
When the twisted pair port on the other device does not have the ability to Auto
Negotiate, or when a 100 Mbps Half-Duplex connection is desired, Auto Negotiation
on 100Mbps must be disabled. Half and Full-Duplex settings must be manually set
and match on both devices to which the McPC 100Mbps is connected. The diagram
below shows a typical application, followed by a table with three possible
configurations.
End to End Connection Switch McPC TX/FX
Half-Duplex Manually Configure HDX Auto Negotiation OFF
Full-Duplex Manually Configure FDX Auto Negotiation OFF
Full-Duplex Auto Negotiation ON Auto Negotiation ON