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DP83822IF: LED_1 is only pull-down in 100BASE-FX mode

Toshihiro Watanabe
Genius 10235 points

Part Number: DP83822IF

Hello,

My customer use DP83822IF in 100BASE-FX mode and considers LED_1 pin only pull down. The reason is another vender PHY works this configuration.

If SD signal doesn't connect to LED_1 pin, what happens? Does DP83822 become not link any more when link is broken?

Best regards,

Toshihiro Watanabe

  • 0
    TI__Genius 11900 points

    Hello Toshihiro,

    Please read the NOTE in section "8.4.4.2 100BASE-FX Receive". This will answer your question.

    If SD is not used and the link "is broken, disconnected or otherwise disrupted, the link will recover only by initiating a soft reset through MDIO/MDC interface."

    Thanks,

    Vibhu