Turn off Auto-negotiation and run on fixed speed.

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Turn off Auto-negotiation and run on fixed speed.

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ranjay_shandilya
Contributor III

Hi,

I'm using i.MXRT1050 EVKB and trying to run sdk example (lwip_dhcp_bm) for supporting ethernet.

I want to turn off Auto-negotiation and run on fixed speed. Is it possible?

Is there any auto negotiation flag which can be set for this in the code?

Thanks

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jeremyzhou
NXP Employee
NXP Employee

Hi,
Thanks for your reply.
Actually, in the SDK library, the PHY driver can support configuring speed manually when turning off Auto-negotiation.

jeremyzhou_0-1653536690058.png

Have a great day,
TIC

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jeremyzhou
NXP Employee
NXP Employee

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1) I want to turn off Auto-negotiation and run on a fixed speed. Is it possible?
-- Yes.
2) Is there any auto-negotiation flag that can be set for this in the code?
-- Yes, you can set the phyConfig.autoNeg to false to disable the auto-negotiation function.

jeremyzhou_0-1653356979263.png


Have a great day,
TIC

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ranjay_shandilya
Contributor III

@jeremyzhou Thanks for the reply. After setting this to false, Ho do I set the fixed speed (say I wanna run at 10 Mbs).

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