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SN75LVCP600S: Hot plug issues

KevinMD
Prodigy 130 points
Part Number: SN75LVCP600S
Other Parts Discussed in Thread: SN75LVCP600

Hello,

I've using the SN75LVCP600S for a SATA3 application. There are separate SN75LVCP600S chips on the TX and RX lines as shown below.

We've noticed at times the OS (Win10x64 Pro) does not recognize a hot plugged SSD drive. The OS is on separate NVMe interface. The SSD is a SATA drive connected through the SN75LVCP600S shown above.  This isn't consistent however, as sometimes it does correctly recognize a drive being inserted, removed, and so on. But other times it won't. We have ensured the BIOS is configured to allow SATA hotplug as well.

Is there anything in our SN75LVCP600S implementation that might be causing this?

Thanks

  • 0
    TI__Guru* 91440 points

    Hi Kevin,

    Overall schematic looks fine. A couple of points:

    1). Do you know when it fails or when SSD drive is not being recognized, how far into the protocol negotiation do we go through? Is it possible to put high impedance scope probe to compare a successful versus SSD is not recognized?

    2). Anyway to see if you see the same problem without SN75LVCP600? I am wondering if there could be some issue not related to the LVCP600S device.

    3). In your schematic you are pulling up three control signals: EQ, DE< & SD_threshold. As an experiment, what happens if you pull these down? Do you see a similar issue?

    Regards ,, Nasser