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DP83TC811SEVM: DP83TC811SEVM

Mohammed Afzal
Prodigy 80 points
Part Number: DP83TC811SEVM
Other Parts Discussed in Thread: TMDX570LC43HDK,

Tool/software:

Hi ,

I am tiring to communicate with PHY_DP83TC811SEVM through TMDX570LC43HDK via MDIO and MDC. I am using code composer studio to read the data (resistor value of the boot strap), but cant red the value. I can see the signal going from the HDK, but cant read back the value. MDIO pin on PHY EV board used  2.5K pull up resistor on R15. Is there anything missing in the hardware to established the communication. 

https://www.ti.com/lit/ug/snlu234/snlu234.pdf?ts=1723799906998&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FDP83TC811SEVM

https://www.ti.com/lit/ug/spnu597a/spnu597a.pdf?ts=1723798090724&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FTMDX570LC43HDK

Can you please advice me how we can read resistor values through SMI.

Thanks 

Mohammed Afzal