mirror of https://github.com/efabless/caravel.git
71 lines
2.5 KiB
Tcl
71 lines
2.5 KiB
Tcl
### Caravel base SDC
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### Rev 3
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### Date: 3/12/2022
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## MASTER CLOCKS
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# create_clock -name clk -period 50 [get_ports {clock_core}]
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create_clock -name clk -period 25 [get_pins {clock_ctrl/core_clk}]
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create_clock -name hk_serial_clk -period 50 [get_pins {housekeeping_alt/serial_clock}]
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create_clock -name hk_serial_load -period 1000 [get_pins {housekeeping_alt/serial_load}]
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# hk_serial_clk period is x2 core clock
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set_clock_uncertainty 0.1 [get_clocks {clk}]
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set_clock_uncertainty 0.1 [get_clocks {hk_serial_clk hk_serial_load}]
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set_clock_groups \
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-name clock_group \
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-logically_exclusive \
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-group [get_clocks {clk}]\
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-group [get_clocks {hk_serial_clk}]\
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-group [get_clocks {hk_serial_load}]
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set_propagated_clock [get_clocks {clk}]
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set_propagated_clock [get_clocks {hk_serial_clk}]
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set_propagated_clock [get_clocks {hk_serial_load}]
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## INPUT/OUTPUT DELAYS
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# set input_delay_value 10
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# set output_delay_value 10
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# puts "\[INFO\]: Setting output delay to: $output_delay_value"
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# puts "\[INFO\]: Setting input delay to: $input_delay_value"
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# set_input_delay $input_delay_value -clock [get_clocks {clk}] -add_delay [all_inputs]
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# set_input_delay 0 -clock [get_clocks {clk}] [get_ports {mprj_io_in[35]}]
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# set_input_delay 0 -clock [get_clocks {clk}] [get_ports {clock_core}]
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# set_input_delay 1 -clock [get_clocks {clk}] [get_ports {flash_io0_di}]
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# set_input_delay 1 -clock [get_clocks {clk}] [get_ports {flash_io1_di}]
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# set_input_delay -8 -clock [get_clocks {debug_clk}] [get_ports {mgmt_io_in[0]}]
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#
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# set_output_delay $output_delay_value -clock [get_clocks {clk}] -add_delay [all_outputs]
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# set_output_delay 21 -clock [get_clocks {debug_clk}] [get_ports {mgmt_io_out[0]}]
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## MAX FANOUT
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set_max_fanout $::env(SYNTH_MAX_FANOUT) [current_design]
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## FALSE PATHS (ASYNCHRONOUS INPUTS)
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set_false_path -from [get_ports {rstb_h}]
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# add loads for output ports (pads)
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set min_cap 0.5
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set max_cap 1.0
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puts "\[INFO\]: Cap load range: $min_cap : $max_cap"
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# set_load 10 [all_outputs]
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set_load -min $min_cap [all_outputs]
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set_load -max $max_cap [all_outputs]
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set min_in_tran 1
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set max_in_tran 1.49
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puts "\[INFO\]: Input transition range: $min_in_tran : $max_in_tran"
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set_input_transition -min $min_in_tran [all_inputs]
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set_input_transition -max $max_in_tran [all_inputs]
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# derates
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set derate 0.0375
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puts "\[INFO\]: Setting derate factor to: [expr $derate * 100] %"
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set_timing_derate -early [expr 1-$derate]
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set_timing_derate -late [expr 1+$derate]
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## MAX transition/cap
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set_max_trans 1.5 [current_design]
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# set_max_cap 0.8 [current_design] |