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DP83TC811R-Q1: PHY_AD setting by strap

Part Number: DP83TC811R-Q1
Other Parts Discussed in Thread: DP83TC811

Hi Team,

PHY_AD[3:0] configured by Boot strap cannot be accessed correctly.
Is there any possible reason?

<Details>
RX_ER(pin-14) and RX_DV(pin-15) are opened.
According to Table 17, it is Mode 1 in this case.
According to Table 18, PHY_AD[3:0]=0000b at Mode 1.
However, there is no response when accessing with 0000b.
Instead, when they accessed it with 0001b, they got a response.
The settings and behavior do not match.
Please let me know if there is a possible reason.

Best Regards,