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Original question:

DP83TC811EVM: Media Conversion Usage

DP83TC811EVM: about communication issue with marvel 88Q2110

user6019263
Prodigy 220 points

Part Number: DP83TC811EVM
Other Parts Discussed in Thread: DP83TC811

Hi:

    Sir, I try to use DP83811 EVM communication with Marvel 88Q2110, but can not work , while communicated with Broadcom 2 wire Automotive ethernet IC , it is work , do you know what is the reason ?

  • 0
    TI__Genius 11900 points

    Hello,

    What mode is the DP83TC811 strapped too? What is the bootstrap configurations if any?

    What about the Marvel PHY? What Ethernet standard are you hoping to see link in?

    Thanks,

    Vibhu

  • 0 in reply to Vibhu Vanjari
    Prodigy 220 points

    Hi:

        sir , thank you quick response .

      the background is that , we have several automotive product, some product use 83811 connect to MCU, while some product use 88Q2110 connect to MCU, when test the product with PC  ,should sue 83811 EVM converter 2wire to 4 wire , it seems the EVM connect to 83811 MCU is very good , but when communication with 88Q2110 , it is failed .

    from the 83811 datasheet ,which support below protocol :

                                                                                             100BASE-T1 – IEEE 802.3bw Compliant
                                                                                             – OPEN Alliance Qualified
                                                                                             – Interoperable With BroadR-Reach and100BASE-T1 PHYs

    from the 88Q2110 datasheet , which support below protocol:

                                                                                            100BASE-T1 – IEEE 802.3bw Compliant
                                                                                            1000BASE-T1 – IEEE 802.3bp Compliant  
    I do not know if there have difference .
    100BASE-T1 PHYs

  • 0 in reply to user6019263
    TI__Mastermind 26320 points

    Kindly ensure 88Q2110 is configured for 100Base-T1. If configured for 1000Base-T1 it is not expected to link. Also, please check with 88Q2110 vendor whether 100Base-T1 mode is interoperable with other PHYs or not.

    Regards,

    Geet