Git Product home page Git Product logo

Comments (1)

olajep avatar olajep commented on June 2, 2024

Missing constraints?

These were extracted from 'fifo_async_104x32'

#------------------------------------------------------------------------------#
#                         Native FIFO Constraints                              #
#------------------------------------------------------------------------------#

# Set false path on the reset synchronizers

set_false_path -through [get_ports rst] -to [get_pins -hierarchical -filter {NAME =~ *rstblk*/*PRE}]
set_false_path -from [get_cells -hierarchical -filter {NAME =~ *rstblk*/*rst_reg_reg[*]}]


set wr_clock          [get_clocks -of_objects [get_ports wr_clk]]
set rd_clock          [get_clocks -of_objects [get_ports rd_clk]]

# Ignore paths from the write clock to the read data registers for Asynchronous Distributed RAM based FIFO
set_disable_timing -from CLK -to O [filter [all_fanout -from [get_ports wr_clk] -flat -endpoints_only -only_cells] {PRIMITIVE_SUBGROUP==dram || PRIMITIVE_SUBGROUP==LUTRAM}]

# Set max delay on cross clock domain path for Block/Distributed RAM based FIFO

set_max_delay -from [get_cells inst_fifo_gen/gconvfifo.rf/grf.rf/gntv_or_sync_fifo.gcx.clkx/rd_pntr_gc_reg[*]] -to [get_cells inst_fifo_gen/gconvfifo.rf/grf.rf/gntv_or_sync_fifo.gcx.clkx/gsync_stage[*].wr_stg_inst/Q_reg_reg[*]] -datapath_only [get_property -min PERIOD $rd_clock]

set_max_delay -from [get_cells inst_fifo_gen/gconvfifo.rf/grf.rf/gntv_or_sync_fifo.gcx.clkx/wr_pntr_gc_reg[*]] -to [get_cells inst_fifo_gen/gconvfifo.rf/grf.rf/gntv_or_sync_fifo.gcx.clkx/gsync_stage[*].rd_stg_inst/Q_reg_reg[*]] -datapath_only [get_property -min PERIOD $wr_clock]
################################################################################

Seems like others have had similar issues:
alexforencich/verilog-axis#6

from oh.

Related Issues (20)

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.