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DS90CR288A: Need LVDS-to-USB conversion

Jackson Thomas
Genius 14435 points

Part Number: DS90CR288A
Other Parts Discussed in Thread: IWR6843AOP, IWRL6844

Hello, I am looking for LVDS to USB3/C conversion. It seems a bit tricky since LVDS is farily old and USB3/C fairly new. Main goal is just to preserve some of the speed of LVDS for data throughput. Ideally I need around 5 gbps, but can probably make use of anything above 1.5gbps.

This will interface with the IWRL6844 or IWR6843AOP, TI radar device with 2 lane LVDS, running up to 450MHz clock. (2 data lanes plus the clock, and one frame clock lane). The DS90 part would work but seems to only support 85Mhz, but its the closest match I can find. I think none of the other FPDlink parts can do this multichannel LVDS deserialization? Is there another option that would support a faster clock?

Also, this is only the first half, as parallel data has more options. But would any of these serdes parts, or anything similar, work for USB protocol conversion?

Thanks,

Jackson 

  • +1
    TI__Genius 10526 points

    Hi Jackson,

    I don't think FPD has anything that will fit the use case you're describing. All of our older parts are going to be limited to the slower speed that you mentioned, so those won't be helpful here. We do have higher speed parts, but we don't have anything that can serialize a signal like the one you described above. Additionally, our only high speed outputs are OLDI/LVDS and DisplayPort. If the data you are trying to transfer is video data, you might be able to convert to DisplayPort and then convert to DP-alt mode to go into USB-C, but we would have to discus that further on an internal thread. If the data you are looking to transfer is non-video data, then I don't think FPD has any parts for this.

    Have you talked to the USB team about this? They might have a solution for an LVDS input that I'm not aware of.

    Best,

    Cameron

  • 0 in reply to Cameron Hoholik-Carlson
    TI__Genius 14435 points

    Thanks Cameron, USB team is my next stop. What you are saying is what I had figured as well, just wanted to make sure I wasn't missing anything. I think LVDS->FPD->DP->USB is at least one link too long for what i would want to do. Might revisit if no other option presents itself.

    Thanks!