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DP83TG720S-Q1: Auto-Negotiation

Hung Vu
Prodigy 30 points

Part Number: DP83TG720S-Q1

Hi, I'm bring-up DP83TG720S on our designed board. Bootstrap pin is configured to select RGMII TX Shift mode. After plugin cable, I found the BMSR(0x01) auto-negotiation complete (bit 5) is always 0, and the link status (bit 2) is read as 0. 

It seems DP83TG720S has no Auto-Negotiation mode for RGMII, I do not see any MII registers or strap pins for configuring Auto-Negotiation ?

Thanks,

HungVu