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 & Tria Boards Community
    • Dev Tools
    • Manufacturers
    • Multicomp Pro
    • Product Groups
    • Raspberry Pi
    • RoadTests & Reviews
  • About Us
  • 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
      • Japan
      •  Korea (Korean)
      •  Malaysia
      •  New Zealand
      •  Philippines
      •  Singapore
      •  Taiwan
      •  Thailand (Thai)
      • Vietnam
      • 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 & Tria Boards Community
  • Avnet Boards Forums
  • More
  • Cancel
Avnet Boards Forums
MicroZed Hardware Design Constraint File Variable Definitions
  • 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 Not Answered
  • Replies 3 replies
  • Subscribers 341 subscribers
  • Views 283 views
  • Users 0 members are here
Related

Constraint File Variable Definitions

rrsquez
rrsquez over 8 years ago

Hello. The following is a line from the MicroZed constraint file (microzed_7z010_master_XDC_RevB_v1.xdc).

Here is one line:

set_property PACKAGE_PIN T10 [get_ports{JX1_LVDS_0_N}]

Where is definition for "JX1_LVDS_0_N" and the other variables used in these constraint files?

 

Another example:

The Zedboard also has a constraint file (zedboard_master_XDC_RevC_D_v3.xdc) that also uses variables in this manner.

Here is one line: 

set_property PACKAGE_PIN U11  [get_ports {OLED_VBAT}];  # "OLED-VBAT"

Again, where would the "OLED_VBAT" variable be defined? It is a number between 54 and 57.
 

Thank you, Richard V

  • Sign in to reply
  • Cancel
Parents
  • drozwood90
    0 drozwood90 over 8 years ago

    When pinning differential pairs in a constraint file, you only need to enter in the _P.  The _N will automatically come along for the ride!

    If you use those pins for SINGLE ended, you will need to modify the constraint.

    --Dan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
Reply
  • drozwood90
    0 drozwood90 over 8 years ago

    When pinning differential pairs in a constraint file, you only need to enter in the _P.  The _N will automatically come along for the ride!

    If you use those pins for SINGLE ended, you will need to modify the constraint.

    --Dan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
Children
  • rrsquez
    0 rrsquez over 8 years ago in reply to drozwood90

    Hello Dan. Sorry, but you still haven't answered my question.

    This is 1 line from the constraint file provided on the website:

    set_property PACKAGE_PIN T10 [get_ports{JX1_LVDS_0_N}

     

    Again, I have to ask:
    Where is definition for "JX1_LVDS_0_N" and the other constants used in these constraint files? I didn't create this file. I don't care that it's a differential signal.

     

    Thank you, Richard V

    • 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