Article ID: 000084240 Content Type: Troubleshooting Last Reviewed: 01/31/2014

Do the LED_AN or LED_LINK signals of Triple Speed Ethernet IP Core reflect the copper link status when the IP Core is in SGMII MAC mode?

Environment

BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

No, LED_AN / LED_LINK signals or AUTO_NEGOTIATION_COMPLETE / LINK_STATUS registers do not reflect the copper link status but SGMII link status.

Resolution In SGMII MAC mode, you need to read COPPER_LINK_STATUS register (PCS register address 0x05 bit[15]) to ascertain the copper link status.

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