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Selecting Ethernet Transceiver IC

Jayvin Street
Prodigy 20 points

Hello All,

I'm working on a project that requires the use of an RJ45 Ethernet connector for the use of the MODBus protocol. The protocol is based of the Ethernet II / IEEE 803.2 standard, so a transceiver IC is needed. Our current requirements are as follows:

Must Have:

3.3V Logic

Minimum Speed: 10Mbps

I think Half-Duplex? Please advise, as all input is welcomed

2 port minimum (4 wire, 2 pairs will be used for ethernet)

Nice to Have

SPI Logic for MCU

Reasonably small package size (i.e. around 24 pin package)

  • 0
    TI__Mastermind 19250 points

    Hi Jayvin,

    The two port standard Ethernet device series we offer is DP83849 series.

    In case, you want to small form factor, you can use DP83825, our lowest form factor single port ethernet device. In this case, you might have to use 2 of these devices.

    If you are looking for very high cable reach (>150m and upto 2km), you can use our single port DP83TD510.

    --
    Regards,
    Gokul.

  • 0 in reply to Gokul Koraganji
    Prodigy 20 points

    Hey Gokul,

    Thank you for responding to my inquiry. I do have a few follow up questions:

    Does TI offer any Ethernet Transceiver's that have an SPI protocol output? We wanted to use the ESP32-S3 for this project, but the ESP32-S3 isn't compatible with the Ethernet protocol for MII or RMII?

    If not, does TI offer any transceivers to convert the Ethernet protocol into SPI?

    For the high cable length transceivers, are those intended for using with a ethernet connection that ranges from 150m to 2km between, let's say, a ethernet router and the unit with an ethernet port?

  • 0 in reply to Jayvin Street
    TI__Mastermind 19250 points

    Hi Jayvin,

    TI doesn't have any devices or bridges from Ethernet to SPI.

    Jayvin Street said:
    For the high cable length transceivers, are those intended for using with a ethernet connection that ranges from 150m to 2km between, let's say, a ethernet router and the unit with an ethernet port?

    The high cable length transceivers are used for end-to-end solutions where low speed data (<10M) should be transferred across higher cable lengths. The standard protocol used by these transceivers is 10Base-T1L, which is not compatible with standard ethernet routers or standard ethernet ports.
    10Base-T1L transceiver gives data to a standard MII, RMII, RGMII interface and needs a MAC.

    --
    Regards,
    Gokul.