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[AM1808] Ethernet MAC

Yashpal Patel49892
Expert 1835 points
Other Parts Discussed in Thread: AM1808, TLK1221, AM1707

Hi,

I want use AM1808, in that we want use Ethernet MAC but in this PHY hardware is external.

But I don't want to use any external PHY IC for ethernet.

Only i want to connect the Magnetic and RJ45 connector as per same LM3S9B96, so what can i do???

Yashpal

  • 0
    TI__Guru 62975 points

    Yashpal,

    Unfortunately there is no ethernet PHY embedded in AM1808 so you will need to use an external PHY in order to connect AM1808 to an ethernet network through RJ45.

    -Tommy

  • 0 in reply to tlee
    Expert 1835 points

    Hi,

    Thanks for the reply.

    CAn you pls explain, why AM1808 Ethernet MAC is better than LM3S9B96 Ethernet MAC?????

    Also pls explain how can I used MDIO module in EMAC or What is the role of MDIO in EMAC for better performance????

    Pls let know me the AM1808 has drive stack for SNMP, SMTP EMAC protocol.

    Yashpal

  • 0 in reply to Yashpal Patel49892
    TI__Guru 62975 points

    Yashpal Patel said:

    CAn you pls explain, why AM1808 Ethernet MAC is better than LM3S9B96 Ethernet MAC?????

    I'm not sure that I can say that one EMAC is better than the other.  They have different architectures so it depends on what features you are seeking.  For example, the AM1808 uses CPPI packet descriptors to queue up multiple packets for transmission, but it looks like LM3S9B96 uses a memory-mapped FIFO approach.  On the other hand, LM3S9B96 includes a time-stamp feature that the AM1808 does not.

     

    Yashpal Patel said:

     

    Also pls explain how can I used MDIO module in EMAC or What is the role of MDIO in EMAC for better performance????

     

    MDIO is intended for interprocessor communication like I2C.  For typical applications, the EMAC uses the MDIO link to communicate with the ethernet PHY for configuration purposes.

    Yashpal Patel said:

    Pls let know me the AM1808 has drive stack for SNMP, SMTP EMAC protocol.

    AM1808 has network stacks for Linux.  At a minimum, It supports TCP/IP with DHCP.  If you are interested in the Linux network capabilities, I would recommend asking this question in the Linux forum: http://e2e.ti.com/support/embedded/f/354.aspx

  • 0 in reply to tlee
    Expert 1835 points

    Hi,

    We want to use Ethernet MAC in AM1808, I study SOM module of AM1808 and it is used MII interface.

    In this SOM Module for External PHY LAN8710 used, for the same connection puropse (RMII Interface) can we use TLK1221 or any other Texas make IC use???

    Pls help..

    Yashpal

  • 0 in reply to Yashpal Patel49892
    TI__Guru 62975 points

    Yashpal,

    The TLK1221 device is not quite an ethernet PHY so it won't be able to replace the functions of the LAN8710.  Also, the TLK1221 is a Gigabit component, whereas the AM1808 EMAC can only achieve 100Mbps.

    LAN8710 supports RMII.  Logic PD also uses a LAN8720 on the EVM UI board for RMII.  The AM1707 EVM, which has the same EMAC RMII interface as AM1808, uses a Micrel PHY.  In general, you should be able to use any PHY that follows the RMII interface standard.

    -Tommy