Knowledge Base Article

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?

Description

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

Updated 3 months ago
Version 2.0
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