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LP-AM243: Gigabit Ethernet on LP-AM243

Conor
Guru 10990 points
Part Number: LP-AM243

Hi,

Q1. I'm considering using Gigabit Ethernet with the AM335x. Am I correct in my understanding that if I want to perform 1 Gigabit communication with AM335x, I need to use a model number with DEVICE SPEED RANGE of 100?

Q2. This is related to Q1. The LP-AM243 is an IC with a maximum operating frequency of 800MHz, but it is strange that it supports Gigabit Ethernet. Can I get any comments?

Thanks,

Conor

  • 0
    TI__Expert 7265 points

    Hi Conor,

    Thank you for your query.

    Let me check on this and get back to you.

    Regards,

    Nitika

  • 0 in reply to Nitika Verma
    Guru 10990 points

    Hi Nitika,

    Thank you. I have one additional question.

    Question 3
    When comparing AM335x and AM62x, there was a difference in QSPI. (AM335x does not have QSPI, AM62x has QSPI) As far as I can see in the table below, there is a description that Qaud-I/O's SPI-Flash can be connected to AM335x. Is it possible to connect Qaud-I/O's SPI-Flash even though AM335x does not have a QSPI interface?

    Thanks,

    Conor

  • 0
    TI__Guru**** 172604 points

    Hello Conor,

    Thank you for the query.

    TI recommends including queries related to a specific topic and a specific device. The title is expected to reflect the query for other users to search and reuse.  

    Since the title includes LP-AM243 i will answer the related question.

    Conor said:
    Q2. This is related to Q1. The LP-AM243 is an IC with a maximum operating frequency of 800MHz, but it is strange that it supports Gigabit Ethernet. Can I get any comments?

    The Ethernet interface connects to the MAC on the SOC through RGMII using CPSW3G (or PRU-ICSSG).

    CPSW3G clock is 125M for 1G with 4-bit data.

    The MAC received the data over MDI and translated that data into the required format and sends the information to the CPU to process.

    In short, the 1G ethernet interface has no direct correlation to the 800M CPU frequency.

    For the Am335x related queries, please start new threads as applicable. 

    Regards,

    Sreenivasa