comp.dc

完整的用VERILOG语言开发的USB2.0 IP核源代码,包括文档

###############################################################################
#
# Actual Synthesis Script
#
# This script does the actual synthesis
#
# Author: Rudolf Usselmann
#         [e-mail]
#
# Revision:
# 3/7/01 RU Initial Sript
#
#
###############################################################################

# ==============================================
# Setup Design Parameters
source ../bin/design_spec.dc

# ==============================================
# Setup Libraries
source ../bin/lib_spec.dc

# ==============================================
# Setup File IO

set junk_file /dev/null
append log_file              ../log/$active_design "_cmp.log"
append pre_comp_db_file      ../out/$design_name   "_pre.db"
append post_comp_db_file     ../out/$design_name   ".db"
append post_syn_verilog_file ../out/$design_name   "_ps.v"

sh rm -f $log_file

# ==============================================
# Setup Misc Variables

set hdlin_enable_vpp true       ;# Important - this enables 'ifdefs

# Turn off automatic wire load selection, as this always (WHY ???) defaults to "zero_load"
#set auto_wire_load_selection false

# ==============================================
# Read Design

echo "+++++++++ Reading Design ..."                             >> $log_file
read_file $pre_comp_db_file                                     >> $log_file

# ==============================================
# Operating conditions

echo "+++++++++ Setting up Operation Conditions ..."            >> $log_file
current_design $design_name
set_operating_conditions WORST                                  >> $log_file
#set_wire_load_mode enclosed                                    >> $log_file
set_wire_load_mode top                                          >> $log_file
set_wire_load_model -name suggested_40K                         >> $log_file

# ==============================================
# Setup Clocks and Resets

echo "+++++++++ Setting up Clocks ..."                          >> $log_file

set_drive 0 [find port {*clk_i}]

# !!! Phy Clock !!!
set clock_period2 16
create_clock -period $clock_period2 phy_clk
set_clock_skew -uncertainty 0.5 phy_clk
set_clock_transition 0.9 phy_clk
set_dont_touch_network phy_clk

# !!! WISHBONE Clock !!!
set clock_period 5
create_clock -period $clock_period clk_i
set_clock_skew -uncertainty 0.1 clk_i
set_clock_transition 0.5 clk_i
set_dont_touch_network clk_i

# !!! Reset !!!
set_drive 0 [find port {rst*}]
set_dont_touch_network [find port {rst*}]

# ==============================================
# Setup IOs

echo "+++++++++ Setting up IOs ..."                             >> $log_file

# Need to spell out external IOs

set_driving_cell -cell NAND2D2 -pin Z [all_inputs]              >> $junk_file
set_load 0.2 [all_outputs]

set_input_delay -max 1 -clock clk_i [all_inputs]
set_output_delay -max 1 -clock clk_i [all_outputs]

set_input_delay -max 1 -clock phy_clk [all_inputs]
set_output_delay -max 1 -clock phy_clk [all_outputs]

# ==============================================
# Setup Area Constrains
set_max_area 0.0

# ==============================================
# Force Ultra
set_ultra_optimization -f

# ==============================================
# Compile Design

echo "+++++++++ Starting Compile ..."                           >> $log_file
#compile -map_effort medium -area_effort medium -ungroup_all    >> $log_file
compile -map_effort low -area_effort low                        >> $log_file
#compile -map_effort high -area_effort high -auto_ungroup        >> $log_file

# ==============================================
# Write Out the optimized design

echo "+++++++++ Saving Optimized Design ..."                    >> $log_file
write_file -format verilog -output $post_syn_verilog_file
write_file -hierarchy -format db -output $post_comp_db_file

# ==============================================
# Create Some Basic Reports

echo "+++++++++ Reporting Final Results ..."                    >> $log_file
report_timing -nworst 10                                        >> $log_file
report_area                                                     >> $log_file