AM3352: RGMII driver strength

HS FAE Germany

Part Number: AM3352

Hello,
customer uses a Marvell switch on the RGMII interface. They measured noise with a frequency of 125KHz which is coming from the TX clock of the RGMII interface (signal: RGMII2_TCLK). Is there a possibility to reduce the RGMII driver strength?

Regards, Holger

over 6 years ago

0 Biser Gatchev-XID over 6 years ago

TI__Guru**** 393215 points

Hi Holger,

No, there is no such functionality in AM335x devices.

0 HS FAE Germany over 6 years ago in reply to Biser Gatchev-XID

TI__Mastermind 32970 points

Biser,

thanks for the answer. Have you heard about such problem before? May be some RC filter on each line would help?

Regards, Holger

0 Biser Gatchev-XID over 6 years ago in reply to HS FAE Germany

TI__Guru**** 393215 points

On our EVM boards 22Ohm serial resistors are usually placed on the RGMII lines.

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AM3352: RGMII driver strength