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AM2634: Bootstrap configuration for RMII in Dp83822

Rohal
Intellectual 495 points
Part Number: AM2634

Tool/software:

Dear Team,

I want connect AM2634 with 2 parallel phy (DP83822) on RMII (100 mbps) connected on same MDIO/MDC (N16,M17)

On a copper connection So i required the boot strap configurations required to make it run.

Mode - 100mbps full duplex

RMII master mode 

Do we need to assign different address for each phy?

  • 0
    TI__Genius 16312 points

    Hi Vikas,

    I have re-assigned the query to our PHY experts. They will get back in a few hours in California time.

    Best regards,
    Shaunak

  • 0 in reply to Shaunak Deshpande
    TI__Mastermind 19621 points

    Hi Vikas!

    I'm an Applications Engineer from the Ethernet PHY team can gladly assist with this query. 

    To answer your question, yes, both PHYs can be connected to the same MDC/MDIO bus and will require a unique PHY Address.

    Regards,

    Alvaro

  • 0 in reply to Alvaro (Al-vuh-roe) Reyes
    Intellectual 495 points

    thanks for reply, i have few more questions, please give your feedback

    Requirements
    PHY1 Address 0x0000
    PHY2 Address 0x0011
    Mode of Operation  100BASE-TX, Full-Duplex, Auto-MDIX
    LED0 Configuration Blink Tx/Rx Activity
    LED1 Configuration ON for 100 Mbps SPEED
    MAC configuration  RMII Master

    Required information 
    Pins PU/PD Strap mode Value
    COL      
    RX_D0      
    Rx_D1      
    Rx_D2      
    Rx_D3      
    LED0      
    LED1      
    CRS      
    Rx_ER      
    Rx_DV      

    Please fill above blank space

    Aditional Questions
    1. Can we saparate link and Tx/Rx leds
    2. Will speed led work in auto MDIx mode
    3. How to enable auto negotiation