287 lines
9.5 KiB
Tcl
287 lines
9.5 KiB
Tcl
# Test advanced port delay, derating, data check, and misc SDC features
|
|
source ../../test/helpers.tcl
|
|
|
|
read_liberty ../../test/nangate45/Nangate45_typ.lib
|
|
read_verilog sdc_test2.v
|
|
link_design sdc_test2
|
|
|
|
############################################################
|
|
# Setup clocks
|
|
############################################################
|
|
|
|
create_clock -name clk1 -period 10 [get_ports clk1]
|
|
create_clock -name clk2 -period 20 -waveform {0 10} [get_ports clk2]
|
|
create_clock -name vclk -period 8
|
|
|
|
############################################################
|
|
# Input delays with comprehensive min/max/rise/fall options
|
|
############################################################
|
|
|
|
# Basic input delay
|
|
set_input_delay -clock clk1 2.0 [get_ports in1]
|
|
|
|
# Rise/fall max/min on same port
|
|
set_input_delay -clock clk1 -rise -max 2.5 [get_ports in2]
|
|
set_input_delay -clock clk1 -rise -min 1.2 [get_ports in2]
|
|
set_input_delay -clock clk1 -fall -max 2.3 [get_ports in2]
|
|
set_input_delay -clock clk1 -fall -min 1.0 [get_ports in2]
|
|
|
|
# Input delay with clock_fall
|
|
set_input_delay -clock clk1 -clock_fall 1.5 [get_ports in3]
|
|
|
|
# Additional delay on same port
|
|
set_input_delay -clock clk2 1.8 [get_ports in3] -add_delay
|
|
|
|
# Rise/fall with clock_fall + add_delay
|
|
set_input_delay -clock clk1 -clock_fall -rise -max 2.8 [get_ports in3] -add_delay
|
|
set_input_delay -clock clk1 -clock_fall -fall -min 0.8 [get_ports in3] -add_delay
|
|
|
|
############################################################
|
|
# Output delays with comprehensive options
|
|
############################################################
|
|
|
|
# Basic output delay
|
|
set_output_delay -clock clk1 3.0 [get_ports out1]
|
|
|
|
# Rise/fall max/min on same port
|
|
set_output_delay -clock clk2 -rise -max 3.5 [get_ports out2]
|
|
set_output_delay -clock clk2 -rise -min 1.5 [get_ports out2]
|
|
set_output_delay -clock clk2 -fall -max 3.2 [get_ports out2]
|
|
set_output_delay -clock clk2 -fall -min 1.2 [get_ports out2]
|
|
|
|
# Output delay with clock_fall
|
|
set_output_delay -clock clk1 -clock_fall 2.5 [get_ports out1] -add_delay
|
|
|
|
############################################################
|
|
# Source latency with early/late (ClockInsertion.cc)
|
|
############################################################
|
|
|
|
set_clock_latency -source -early 0.3 [get_clocks clk1]
|
|
set_clock_latency -source -late 0.5 [get_clocks clk1]
|
|
set_clock_latency -source -early -rise 0.25 [get_clocks clk1]
|
|
set_clock_latency -source -late -rise 0.55 [get_clocks clk1]
|
|
set_clock_latency -source -early -fall 0.20 [get_clocks clk1]
|
|
set_clock_latency -source -late -fall 0.45 [get_clocks clk1]
|
|
|
|
set_clock_latency -source -early 0.2 [get_clocks clk2]
|
|
set_clock_latency -source -late 0.4 [get_clocks clk2]
|
|
|
|
# Network latency with all corners
|
|
set_clock_latency 0.3 [get_clocks clk1]
|
|
set_clock_latency -rise -max 0.4 [get_clocks clk1]
|
|
set_clock_latency -rise -min 0.2 [get_clocks clk1]
|
|
set_clock_latency -fall -max 0.35 [get_clocks clk1]
|
|
set_clock_latency -fall -min 0.15 [get_clocks clk1]
|
|
|
|
############################################################
|
|
# Timing derate with cell/net type specifics (DeratingFactors.cc)
|
|
############################################################
|
|
|
|
# Global derate
|
|
set_timing_derate -early 0.95
|
|
set_timing_derate -late 1.05
|
|
|
|
# Rise/fall derate
|
|
set_timing_derate -early -rise 0.96
|
|
set_timing_derate -late -fall 1.04
|
|
|
|
# Clock/data path derate
|
|
set_timing_derate -early -clock 0.97
|
|
set_timing_derate -late -clock 1.03
|
|
set_timing_derate -early -data 0.94
|
|
set_timing_derate -late -data 1.06
|
|
|
|
# Cell delay derate
|
|
set_timing_derate -early -cell_delay 0.93
|
|
set_timing_derate -late -cell_delay 1.07
|
|
|
|
# Net delay derate
|
|
set_timing_derate -early -net_delay 0.92
|
|
set_timing_derate -late -net_delay 1.08
|
|
|
|
# Cell-specific derate (on lib cell)
|
|
set_timing_derate -early -cell_delay 0.91 [get_lib_cells NangateOpenCellLibrary/INV_X1]
|
|
set_timing_derate -late -cell_delay 1.09 [get_lib_cells NangateOpenCellLibrary/INV_X1]
|
|
|
|
# Instance-specific derate
|
|
set_timing_derate -early -cell_delay 0.90 [get_cells buf1]
|
|
set_timing_derate -late -cell_delay 1.10 [get_cells buf1]
|
|
|
|
set_timing_derate -early -cell_delay 0.89 [get_cells inv1]
|
|
set_timing_derate -late -cell_delay 1.11 [get_cells inv1]
|
|
|
|
############################################################
|
|
# Disable timing - various forms (DisabledPorts.cc)
|
|
############################################################
|
|
|
|
# Disable instance
|
|
set_disable_timing [get_cells buf1]
|
|
|
|
# Disable pin
|
|
set_disable_timing [get_pins inv1/A]
|
|
|
|
# Disable lib cell arc
|
|
set_disable_timing [get_lib_cells NangateOpenCellLibrary/BUF_X1] -from A -to Z
|
|
|
|
# Disable lib cell (all arcs)
|
|
set_disable_timing [get_lib_cells NangateOpenCellLibrary/NAND2_X1]
|
|
|
|
############################################################
|
|
# Data check (DataCheck.cc)
|
|
############################################################
|
|
|
|
set_data_check -from [get_pins reg1/Q] -to [get_pins reg2/D] -setup 0.5
|
|
|
|
set_data_check -from [get_pins reg1/Q] -to [get_pins reg2/D] -hold 0.3
|
|
|
|
catch {
|
|
set_data_check -from [get_pins reg1/Q] -to [get_pins reg2/D] -setup 0.6 -clock_fall
|
|
}
|
|
|
|
############################################################
|
|
# Case analysis and logic values (Constants)
|
|
############################################################
|
|
|
|
set_case_analysis 0 [get_ports in3]
|
|
|
|
set_logic_one [get_ports in2]
|
|
|
|
set_logic_zero [get_ports in1]
|
|
|
|
############################################################
|
|
# Latch borrow limits
|
|
############################################################
|
|
|
|
set_max_time_borrow 2.0 [get_clocks clk1]
|
|
|
|
set_max_time_borrow 1.5 [get_pins reg1/D]
|
|
|
|
############################################################
|
|
# Min pulse width (all options)
|
|
############################################################
|
|
|
|
set_min_pulse_width 1.0 [get_clocks clk1]
|
|
set_min_pulse_width -high 0.6 [get_clocks clk1]
|
|
set_min_pulse_width -low 0.4 [get_clocks clk1]
|
|
set_min_pulse_width 0.8 [get_clocks clk2]
|
|
|
|
############################################################
|
|
# Clock gating check
|
|
############################################################
|
|
|
|
set_clock_gating_check -setup 0.5 [get_clocks clk1]
|
|
set_clock_gating_check -hold 0.3 [get_clocks clk1]
|
|
set_clock_gating_check -setup 0.4 [current_design]
|
|
set_clock_gating_check -hold 0.2 [current_design]
|
|
|
|
############################################################
|
|
# Driving cells with various options
|
|
############################################################
|
|
|
|
set_driving_cell -lib_cell BUF_X1 [get_ports in1]
|
|
set_driving_cell -lib_cell INV_X1 -pin ZN [get_ports in2]
|
|
set_driving_cell -lib_cell BUF_X4 -rise [get_ports in3]
|
|
set_driving_cell -lib_cell BUF_X2 -fall [get_ports in3]
|
|
|
|
# set_drive
|
|
set_drive 100 [get_ports in1]
|
|
set_drive -rise 80 [get_ports in2]
|
|
set_drive -fall 120 [get_ports in2]
|
|
|
|
# Loads
|
|
set_load 0.05 [get_ports out1]
|
|
set_load -pin_load 0.03 [get_ports out2]
|
|
set_load -wire_load 0.02 [get_ports out1]
|
|
set_load -min 0.01 [get_ports out1]
|
|
set_load -max 0.06 [get_ports out1]
|
|
|
|
# Input transition
|
|
set_input_transition 0.15 [get_ports in1]
|
|
set_input_transition -rise -max 0.12 [get_ports in2]
|
|
set_input_transition -fall -min 0.08 [get_ports in2]
|
|
set_input_transition -rise -min 0.06 [get_ports in3]
|
|
set_input_transition -fall -max 0.18 [get_ports in3]
|
|
|
|
############################################################
|
|
# Port fanout number
|
|
############################################################
|
|
|
|
set_port_fanout_number 4 [get_ports out1]
|
|
set_port_fanout_number 8 [get_ports out2]
|
|
|
|
############################################################
|
|
# Net resistance
|
|
############################################################
|
|
|
|
set_resistance -min 10.0 [get_nets n1]
|
|
set_resistance -max 20.0 [get_nets n1]
|
|
|
|
############################################################
|
|
# Design limits
|
|
############################################################
|
|
|
|
set_max_transition 0.5 [current_design]
|
|
set_max_capacitance 0.2 [current_design]
|
|
set_max_fanout 20 [current_design]
|
|
set_max_area 100.0
|
|
|
|
############################################################
|
|
# Operating conditions and wire load
|
|
############################################################
|
|
|
|
set_operating_conditions typical
|
|
set_wire_load_model -name "5K_hvratio_1_1"
|
|
set_wire_load_mode enclosed
|
|
|
|
############################################################
|
|
# Voltage setting
|
|
############################################################
|
|
|
|
set_voltage 1.1 -min 0.9
|
|
|
|
############################################################
|
|
# Write SDC with all the constraints
|
|
############################################################
|
|
|
|
set sdc_file1 [make_result_file sdc_port_delay_adv1.sdc]
|
|
write_sdc -no_timestamp $sdc_file1
|
|
|
|
set sdc_file2 [make_result_file sdc_port_delay_adv2.sdc]
|
|
write_sdc -no_timestamp -compatible $sdc_file2
|
|
|
|
set sdc_file3 [make_result_file sdc_port_delay_adv3.sdc]
|
|
write_sdc -no_timestamp -digits 8 $sdc_file3
|
|
|
|
############################################################
|
|
# Report checks to verify
|
|
############################################################
|
|
|
|
report_checks
|
|
|
|
report_checks -path_delay min
|
|
|
|
report_check_types -max_slew -max_capacitance -max_fanout
|
|
|
|
############################################################
|
|
# Unset derating and verify
|
|
############################################################
|
|
|
|
unset_timing_derate
|
|
|
|
# Unset disable
|
|
unset_disable_timing [get_cells buf1]
|
|
unset_disable_timing [get_pins inv1/A]
|
|
unset_disable_timing [get_lib_cells NangateOpenCellLibrary/BUF_X1] -from A -to Z
|
|
unset_disable_timing [get_lib_cells NangateOpenCellLibrary/NAND2_X1]
|
|
|
|
# Unset case analysis
|
|
unset_case_analysis [get_ports in3]
|
|
|
|
# Unset clock latencies
|
|
unset_clock_latency [get_clocks clk1]
|
|
unset_clock_latency -source [get_clocks clk1]
|
|
unset_clock_latency [get_clocks clk2]
|
|
unset_clock_latency -source [get_clocks clk2]
|
|
|
|
report_checks
|