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Tool/software:
Hi,
My application needs detect Link partner capability that is whether the Link partner is 10/100/1000 Base-T capable, half/full duplex etc. I dont need to do any communication with the link partner and the requirement is limited to knowing the link partner capability.
I want to know if DP83867 is able to perform this without any MAC or GMII (or other interface) and using only USB-MDIO interface. That is if I access the registers using MDIO, enable auto negotiation and read back the registers after auto negotiation is completed. I know this is possible for 10/100Base -T, the question is if it would work for 1000 Base-T as well.
Has anybody checked this and kindly share your valuable feedback.
Thanks,
Jithin
Hi Jithin!
Yes this is entirely possible. No MAC interface needs to be connected for your application to work. If you have register access, you can see the link partner's capabilities in Register 0x5 (for 10/100 speeds) and Register 0xA (for gigabit speeds).
Regards,
Alvaro