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Datasheet of VL-EPM-E2A - PC/104-PLUS, ET, 10/100, 1 PORT
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VL-EPM-E2 Reference Manual
9
Interfaces and Connectors
Ethernet
The Ethernet interface, based on a Micrel KSZ8441-PQML controller, provides a standard
10baseT and 100baseTX network interface. Software drivers are available for a wide variety of
operating systems to provide a complete high-performance networking solution. The Ethernet
controller features both Auto-Negotiation and automatic MDI/MDI-X cable crossover detection.
Table 3: VL-EPM-E2 Ethernet Connector (J1 and J2) Pinout
Models A and B
1
J1/J2
Pin
Signal
Name
Function
1
TD+
Transmit Data Positive
2
TD–
Transmit Data Negative
3
RD+
Receive Data Positive
4
GND
Isolated
Ground
2
5
GND
Isolated
Ground
6
RD–
Receive Data Negative
7
GND
Isolated
Ground
8
GND
Isolated
Ground
Table 4: VL-EPM-E2 Ethernet Connector (J3 and J4) Pinout
Model D
1
J3/J4
Pin
Signal
Name
Function
1
GND
Isolated
Ground
2
GND
Isolated
Ground
3
RD–
Receive Data Negative
4
RD+
Receive Data Positive
5
GND
Isolated
Ground
6
GND
Isolated
Ground
7
TD–
Transmit Data Negative
8
TD+
Transmit Data Positive
1. Tables show the MDI default pinout. The Tx
and Rx pairs reverse when the controller
switches to MDI-X mode.
2. Ground pins isolated to reduce EMI.
5
3
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