Comments Locked

11 Comments

Back to Article

  • PeachNCream - Friday, January 31, 2020 - link

    Cool, but sort of a pity that UFS has not yet replaced eMMC across the board but there is a lot of "good enough" storage performance on tap for eMMC devices.
  • willis936 - Friday, January 31, 2020 - link

    Part of that is their heavy-handed walled garden. I used to work at a test house that likes to be present in many standards bodies. The UFS had utterly unreasonable requirements for members. You need have multiple engineers do free work for something like a year before they would consider inviting you. That isn't how standards bodies are run. I'm sorry, Samsung is big but it's not so big that other people will bend over backwards to be in their backyard. Open spec development is key for adoption.
  • milkywayer - Friday, January 31, 2020 - link

    That's cool and all but is there also a standard to stop laptop makers from making 4gb and 8gb laptops in the $1000-1500 range in 2020?
    Im looking at you Dell, with the new xps 13 with massive 4 gigs of ram going for $1000+ after taxes.
  • PeachNCream - Friday, January 31, 2020 - link

    The only way we're going to get there is t purchase something else. Sucks that 4GB of RAM is STILL finding its way into $1K laptops and there are quite a few models that continue to max out at 8GB. What year is it?
  • PeachNCream - Friday, January 31, 2020 - link

    I had no idea that was even a problem. Given JEDEC is the publishing entity, I would have thought there would be fewer barriers to participation in the UFS standards body. Thanks for sharing your insights.
  • Spunjji - Monday, February 3, 2020 - link

    Thanks for the perspective.
  • Santoval - Friday, January 31, 2020 - link

    "Devices compliant with the UFS 3.1 standard continue to use MIPI's M-PHY 4.1 physical layer with 8b/10b line encoding..."
    Why continue to waste 20% of the bandwidth for encoding when there are many other available, much more efficient encoding options? 128b/130b wastes just 1.5% but perhaps it is a bit complex for UFS (though if they employed PCIe 3.0 as the physical layer they would also use 128b/130b encoding).
    Alternatively they could use 64b/66b encoding, which is simpler and has an encoding waste of 3%. 64b/66b encoding is used by Thunderbolt, 10/100 Gigabit Ethernet and InfiniBand, among others.
  • willis936 - Friday, January 31, 2020 - link

    You can’t beat 8b10b for clock recovery reliability. 66b64b can still allow for high BER in worst case data. I had trouble getting ANY receiver to lock onto SSPRQ during PAM4 development.
  • linuxgeex - Sunday, February 2, 2020 - link

    8b/10b is an acknowledgement that UFS is targeting low-cost applications, where BER will be higher as a result of cost-cutting aka corner-cutting.
  • GreenReaper - Sunday, February 2, 2020 - link

    Maybe someone put a patent on the idea of using fewer bits. >_<
  • RiseStar - Thursday, February 18, 2021 - link

    If you are in the market for UFS Storage right now, you're probably wondering what the best brands on the market are. https://customessayorder.com/ uses a couple of different UFS models from two brands. JEDEC is one of them.

Log in

Don't have an account? Sign up now