DP83869HM: SGMII to copper mode - termination resistor

Eran Dahan

Part Number: DP83869HM

Hi,

Are any termination resistors required for SGMII/SERDRS input or output?

In the datasheet, I didn't find any reference for EXTERNAL termination resistor but in the EVM schematic I do find these external termination resistors

over 3 years ago

0 Alon Kopelman over 3 years ago

TI__Expert 3727 points

Hi Eran,

Going through the datasheet, I see the DP83869HM has integrated termination.

Best regards,

Alon K.

0 Eran Dahan over 3 years ago in reply to Alon Kopelman

Prodigy 30 points

Hi,

I asked about SGMII and not RGMII - these are two different input pins.

MDI are also not what I'm asking - MDI are the pins to RJ45 connector.

please help

0 Alon Kopelman over 3 years ago in reply to Eran Dahan

TI__Expert 3727 points

Hi Eran,

I confirmed, termination resistors aren't needed for SGMII input, only thing that is needed is decoupling serial capacitors.

Best regards,

Alon K.

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DP83869HM: SGMII to copper mode - termination resistor