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DP83822I: PHY LED_0 Connection configuration

Rohidas Sawant76
Intellectual 370 points
Part Number: DP83822I

Hello,

In DP83822I PHY Two types of LED_0 driving connections are possible,

1.  LED_0 Pin in Sink mode - Pull-Up Configuration 

2.  LED_0 Pin in Source mode - Pull-Down Configuration 

Which configuration is recommended as per TI?

  • 0
    TI__Mastermind 39775 points

    Hi Rohidas,

    Both configurations are valid. It just depends on what the user would like to bootstrap the pin into. These pins during power-up and resetting turn into inputs where they sample the voltage. The voltage measured at that point in time tells the PHY what mode to go into upon bring-up. The LED_0 pin controls the AN_0 bit, whose information is located in Table 8-11. Depending on the mode you would like the PHY in, please strap LED_0 (AN_0), RX_D0 (AN_D1), RX_D3 (AN_EN), and COL (FX_EN) accordingly.

    Sincerely,

    Gerome