element14 Community
element14 Community
    Register Log In
  • Site
  • Search
  • Log In Register
  • Community Hub
    Community Hub
    • What's New on element14
    • Feedback and Support
    • Benefits of Membership
    • Personal Blogs
    • Members Area
    • Achievement Levels
  • Learn
    Learn
    • Ask an Expert
    • eBooks
    • element14 presents
    • Learning Center
    • Tech Spotlight
    • STEM Academy
    • Webinars, Training and Events
    • Learning Groups
  • Technologies
    Technologies
    • 3D Printing
    • FPGA
    • Industrial Automation
    • Internet of Things
    • Power & Energy
    • Sensors
    • Technology Groups
  • Challenges & Projects
    Challenges & Projects
    • Design Challenges
    • element14 presents Projects
    • Project14
    • Arduino Projects
    • Raspberry Pi Projects
    • Project Groups
  • Products
    Products
    • Arduino
    • Avnet Boards Community
    • Dev Tools
    • Manufacturers
    • Multicomp Pro
    • Product Groups
    • Raspberry Pi
    • RoadTests & Reviews
  • Store
    Store
    • Visit Your Store
    • Choose another store...
      • Europe
      •  Austria (German)
      •  Belgium (Dutch, French)
      •  Bulgaria (Bulgarian)
      •  Czech Republic (Czech)
      •  Denmark (Danish)
      •  Estonia (Estonian)
      •  Finland (Finnish)
      •  France (French)
      •  Germany (German)
      •  Hungary (Hungarian)
      •  Ireland
      •  Israel
      •  Italy (Italian)
      •  Latvia (Latvian)
      •  
      •  Lithuania (Lithuanian)
      •  Netherlands (Dutch)
      •  Norway (Norwegian)
      •  Poland (Polish)
      •  Portugal (Portuguese)
      •  Romania (Romanian)
      •  Russia (Russian)
      •  Slovakia (Slovak)
      •  Slovenia (Slovenian)
      •  Spain (Spanish)
      •  Sweden (Swedish)
      •  Switzerland(German, French)
      •  Turkey (Turkish)
      •  United Kingdom
      • Asia Pacific
      •  Australia
      •  China
      •  Hong Kong
      •  India
      •  Korea (Korean)
      •  Malaysia
      •  New Zealand
      •  Philippines
      •  Singapore
      •  Taiwan
      •  Thailand (Thai)
      • Americas
      •  Brazil (Portuguese)
      •  Canada
      •  Mexico (Spanish)
      •  United States
      Can't find the country/region you're looking for? Visit our export site or find a local distributor.
  • Translate
  • Profile
  • Settings
Avnet Boards Forums
  • Products
  • Dev Tools
  • Avnet Boards Community
  • Avnet Boards Forums
  • More
  • Cancel
Avnet Boards Forums
Ultra96 Hardware Design FSBL DDR4 timings
  • Forum
  • Documents
  • Members
  • Mentions
  • Sub-Groups
  • Tags
  • More
  • Cancel
  • New
Join Avnet Boards Forums to participate - click to join for free!
Actions
  • Share
  • More
  • Cancel
Forum Thread Details
  • State Verified Answer
  • +1 person also asked this people also asked this
  • Replies 6 replies
  • Subscribers 320 subscribers
  • Views 1134 views
  • Users 0 members are here
Related

FSBL DDR4 timings

userid0
userid0 over 7 years ago

Hi,

I am currently trying to prepare a custom PMU firmware and FSBL. What would be extremely helpful are the DDR4 memory timings.

Is there a way to obtain these?

-- Alex

  • Sign in to reply
  • Cancel

Top Replies

  • userid0
    userid0 over 7 years ago +1 verified
    Hi, I found the reason for my problems. After creating a Block design I missed to click "Run Block Automatization" and to choose "Apply Board preset". If there is a smarter way to do that, let me know…
  • jafoste4
    0 jafoste4 over 7 years ago

    Hello Alex,

    You can find the DDR4 timings in the board definition file that is preloaded in vivado 2018.1 for Ultra96.

    --Josh

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • Former Member
    0 Former Member over 7 years ago

    I noticed that the Micron part # MT53B512M32D2NP-062 is listed as a 1600 (800MHz clk) part, yet the settings in the BSP are for 1066 (533 MHz).  I want to know if the setting can be changed to 1600 for better performance and if the board layout can handle it. If so, then what are the settings for the other timing parameters for the memory controller.  Micron will not release the datasheet for the part w/o an NDA at this time so it's not easy find starting points.     

    Have you guys tested the part at the higher speed ?  I realize it draws more power, produces more heat, and the timings are tighter and it may not work at that speed for any of those reasons.   But, in some applications it woudl be nice to have the memory operate at higher speeds if it works.  So if you tested it and it worked, could you give the other timing parameters for the 1600 speed setting.

    Thanks

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • userid0
    +1 userid0 over 7 years ago

    Hi,

    I found the reason for my problems. After creating a Block design I missed to click "Run Block Automatization" and to choose "Apply Board preset". If there is a smarter way to do that, let me know.

    Regards,

    Alex

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Reject Answer
    • Cancel
  • bhfletcher
    0 bhfletcher over 7 years ago in reply to Former Member

    Very good question!

    Check out https://www.xilinx.com/support/documentation/data_sheets/ds925-zynq-ultrascale-plus.pdf, Table 30, LPDDR4. The specific device on the Ultra96 is the ZU3EG device, -1 speed grade, in the SBVA484 package. As you can see in Table 30, the Max data rate that this device/package supports is 1066. We are using the 1600 Micron device because that is what is available, not because that is the rate we can support.

    If you are happy with what you can do on Ultra96 but want to experiment with higher performance, then you could look at something like the UltraZed to get more performance.

    Bryan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • bhfletcher
    0 bhfletcher over 7 years ago in reply to userid0

    Alex,

    You have found the simplest way. Yes, you should "Run Block Automization" and then "Apply Board Preset." This is how the tools pull in the board parameters into your design.

    Bryan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • Former Member
    0 Former Member over 7 years ago in reply to bhfletcher

    Wow, didn't realize the SBVA484 package had such limits on it.  So weird that only that package does.  You would think that the die speed grade would be the limiting factor and not the package.   I guess that's what I get for only looking at part of the table when I was researching the part.

    Thanks for clearing that up.  If the single channel ADC product sells and customers want more channels in a system then I'll probably use the ZU7EV based board.  It has 64 bit memory and a lot more of it.

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
element14 Community

element14 is the first online community specifically for engineers. Connect with your peers and get expert answers to your questions.

  • Members
  • Learn
  • Technologies
  • Challenges & Projects
  • Products
  • Store
  • About Us
  • Feedback & Support
  • FAQs
  • Terms of Use
  • Privacy Policy
  • Legal and Copyright Notices
  • Sitemap
  • Cookies

An Avnet Company © 2025 Premier Farnell Limited. All Rights Reserved.

Premier Farnell Ltd, registered in England and Wales (no 00876412), registered office: Farnell House, Forge Lane, Leeds LS12 2NE.

ICP 备案号 10220084.

Follow element14

  • X
  • Facebook
  • linkedin
  • YouTube