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[SOLVED] RJ-45 with magnetics transformer (Ethernet port) connections

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mandarsansare

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I am working on circuit having RJ45 connector with built-in magnetics transformer. The schematic diagram of mentioned circuit shows following connections with Rj45 magnetics connector. At first I did not connect the RC circuit (consisting of R17-R18-C10 ,R19-R20-C8 ) to the Rj45 magnetics connector....circuit worked but gave some random behavior. After that i connected the RC circuit and then circuit worked perfectly... I want to know- what is the need of that RC circuit in this???...how it helps in improving the performance..??

Any kind of help is appreciated !!! Thank you

schematic.jpg
 

Those resistors are added for line termination to reduce the reflections and maintain signal integrity.
 
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