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DRA821U: Ethernet Ports usage

Alex Paul
Expert 6106 points

Part Number: DRA821U

HI experts,

I’m looking at the DRA821U as another device of interest.

We need 2 independent Ethernet ports (one for intranet, one for internet).

This SOC has a Gigabit Ethernet MAC (MCU_CPSW0) and a Gigabit Ethernet Switch module (CPSW0).

I’m trying to figure out if the Switch is a full Ethernet port or not.

Can it be used as a fully functional second Ethernet port or is it linked to to the switch ? 

 Regards,

Alex

  • +1
    TI__Guru* 79480 points

    Hi,

    Alex Paul said:
    This SOC has a Gigabit Ethernet MAC (MCU_CPSW0) and a Gigabit Ethernet Switch module (CPSW0).

    Yes, SOC has two instances of CPSW.

    CPSW2G in MCU Domain which is MCU_CPSW2G. (Which has one Internal Host port and One External Physical Port).
    CPSW5G in Main Domain which is MAIN CPSW5G. (which has one Internal Host port and 4 External physical Ports).

    Alex Paul said:

    I’m trying to figure out if the Switch is a full Ethernet port or not.

    Can it be used as a fully functional second Ethernet port or is it linked to to the switch ? 

    You mean separate Physical Ports? If so, yes both instances of CPSW are independent to each other.

    CPSW5G is controlled by single Application in RTOS as Ethernet Firmware, for more details please refer to Ethernet Firmware User Guide.
    Or you can also use as separate MAC Ports using Native Linux Driver, for more details please refer to SDK Documentation.

    Best Regards,
    Sudheer