Ethernet Port Lines

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#10

TX+

Output

Positive line of the differential output signal pair

#9

TX-

Output

Negative line of the differential output signal pair

#2

RX+

Input

Positive line of the differential input signal pair

#1

RX-

Input

Negative line of the differential input signal pair

 

Ethernet port of the EM100 is of 10BaseT type. The EM100 is compatible with all 10BaseT Ethernet hubs and also 99% of 100BaseT hubs. This is because most 100BaseT hubs are actually 100/10 machines that auto-detect the type of device connected to each port.

 

The EM100 is designed to attach directly to the RJ45 Ethernet connector. Standard magnetics circuitry (YCL part 20F001N) has been included onboard to provide a "glueless" interface to the Ethernet network.

 

It is important to make the PCB wire connections between the Ethernet port pins and the RJ45 as short as possible. Making the wires too long may cause the noise level generated by your PCB surpass the maximum radiated emission limits stipulated by FCC and CE regulations. Additionally, longer Ethernet lines on the PCB will make your board more susceptible to the damage from the ESD (electrostatic discharge).