DP83867CS: termination resistor

NAOKI AOYAMA

Guru 11215 points

Part Number: DP83867CS

Hello,

I have a basic question about termination resistor.

There is an termination resistor at the connector side of the magnetics as 75ohm.

Could you tell me how it is decided the value?

Is it the impedance of the LAN cable?

Best Regards,

Naoki Aoyama

over 7 years ago

0 Geet Modi over 7 years ago

TI__Mastermind 26320 points

Hi Naoki-san,

These termination resistors are known as Bob Smith termination and define by the magnetics vendor.
Please google this and you will fiind lot of material on need for Bob Smith termination.

Regards,
Geet

0 NAOKI AOYAMA over 7 years ago in reply to Geet Modi

Guru 11215 points

Hello Geet,

Thank you for your reply.
I will study Bob Smith termination.

Thanks,
Naoki Aoyama

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DP83867CS: termination resistor