DP83848C: Where to place the termination resistor near IC or near connector ?

PYTsai

Part Number: DP83848C

May i have your suggestion regarding Where to place the termination resistor near IC or near connector ?

in our application the connector and the IC distance is 100cm in layout trace. Do you think it will have problem ? thanks!

over 5 years ago

0 Justin Lazaruk over 5 years ago

TI__Expert 7040 points

Hello,

The termination resistors should be placed near the PHY on both MDI and MAC interface sides. 100cm trace length is quite long, it may affect the signal quality to the PHY. Have you reviewed the design and layout guide for the DP83848?

https://www.ti.com/lit/an/snla079d/snla079d.pdf

Regards,
Justin

Interface

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DP83848C: Where to place the termination resistor near IC or near connector ?