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DM8148 SATA interface as eSATA port

Ashvin Geete
Prodigy 70 points

Hi ,

I want to use the the SATA interface of the DM8148 as eSATA port.

do i need to use any buffer/driver (such as MAX4951) b/w the SATA and eSATA port or can directly connect the SATA signals on eSATA port.

the second question is regarding the use of SERDES clock for SATA interface: as per datahsheet (DM8148) the use od SERED clock for SATA interface is optional, do i really need to provide the 100MHz Diff. clock to SERDES clock inputs (i want to use the SATA port as eSATA at 3Gbps).

Thanks

Ashvin Geete

  • 0
    TI__Guru**** 170625 points

    Hi Ashvin,

    This is what we have regarding eSATA:

    http://processors.wiki.ti.com/index.php/TI_SATA_FAQ#eSATA

    We have one known issue:

    http://processors.wiki.ti.com/index.php/TI81XX_PSP_04.04.00.02_Release_Notes#SATA_2

    SATA: harddisks behind the eSATA hub doesn't work.

    We also have some info in the below e2e threads:

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/154421.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/98088.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/128594.aspx

    Regards,
    Pavel