mirror of https://github.com/efabless/caravel.git
70 lines
2.5 KiB
Plaintext
70 lines
2.5 KiB
Plaintext
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### Caravel Core Signoff SDC
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### Rev 1
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### Date: 12/2/2023
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## MASTER CLOCKS
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set clk_period 25
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create_clock -name clk -period $clk_period [get_ports {clock_core}]
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puts "\[INFO\]: Systemn clock period: $clk_period"
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create_clock -name hk_serial_clk -period 100 [get_pins {housekeeping/serial_clock}]
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create_clock -name hk_serial_load -period 1000 [get_pins {housekeeping/serial_load}]
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set_clock_uncertainty 0.1000 [get_clocks {clk hk_serial_clk hk_serial_load}]
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set_propagated_clock [get_clocks {clk hk_serial_clk hk_serial_load}]
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# ## INPUT/OUTPUT DELAYS
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set input_delay_value 4
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set output_delay_value 4
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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}] [all_inputs]
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set_input_delay 0 [get_ports {clock_core}]
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set_output_delay $output_delay_value -clock [get_clocks {clk}] [all_outputs]
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# deassert hkspi_disable
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set_case_analysis 0 [get_pins {housekeeping/_6817_/Q}]
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create_clock -name hkspi_clk -period 100 [get_ports {mprj_io_in[4]}]
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set_input_delay 0 [get_ports {mprj_io_in[4]}]
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set_clock_uncertainty 0.1000 [get_clocks {hkspi_clk}]
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set_propagated_clock [get_clocks {hkspi_clk}]
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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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-group [get_clocks {hkspi_clk}]
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set_max_fanout 18 [current_design]
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# synthesis max fanout is 18
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## FALSE PATHS (ASYNCHRONOUS INPUTS)
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set_false_path -from [get_ports {rstb_h}]
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set_false_path -from [get_ports {gpio_in_core}]
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# add loads for output ports (pads)
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# pad input pin cap 0.036793 (pin OUT of pad sky130_ef_io__gpiov2_pad_wrapped)
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set out_cap 0.036793
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puts "\[INFO\]: Cap load range: $out_cap"
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set_load $out_cap [all_outputs]
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#add input transition for the inputs ports (pads)
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# pad output pin transition range is 0.08:1.5 (pin IN of pad sky130_ef_io__gpiov2_pad_wrapped)
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set min_in_tran 0.08
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set max_in_tran 1.5
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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 -min 0 [get_ports v*]
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set_input_transition -min 0 [get_ports {clock_core}]
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set_input_transition -max $max_in_tran [all_inputs]
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set_input_transition -max 0 [get_ports v*]
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set_input_transition -max 0 [get_ports {clock_core}]
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# check ocv table (not provided)
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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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