sdc-plugin/tests/base_litex/base_litex.sdc

create_clock -name clk100 -period 10.0 clk100

# Input clock 100 MHz
create_clock -period 10 clk100_ibuf -waveform {0.000 5.000}

# Input clock BUFG 100 MHz
create_clock -period 10 soc_clk100bg -waveform {0.000 5.000}

# PLL feedback loop 100 MHz
create_clock -period 10 soc_pll_fb -waveform {0.000 5.000}

# PLL CLKOUT0 60 MHz
create_clock -period 16.666 soc_pll_sys -waveform {0.000 8.333}

# BUFG CLKOUT0 60 MHz
create_clock -period 16.666 sys_clk -waveform {0.000 8.333}

# PLL CLKOUT1 240 MHz
create_clock -period 4.166 soc_pll_sys4x  -waveform {0.000 2.083}

# BUFG CLKOUT1 240 MHz
create_clock -period 4.166 sys4x_clk -waveform {0.000 2.083}

# PLL CLKOUT2 240 MHz
create_clock -period 4.166 soc_pll_sys4x_dqs -waveform {1.041 3.124}

# BUFG CLKOUT2 240 MHz
create_clock -period 4.166 sys4x_dqs_clk -waveform {1.041 3.124}

# PLL CLKOUT3 200 MHz
create_clock -period 5 soc_pll_clk200 -waveform {0.000 2.500}

# BUFG CLKOUT3 200 MHz
create_clock -period 5 clk200_clk -waveform {0.000 2.500}

# PLL CLKOUT4 25 MHz
create_clock -period 40 soc_pll_clk100 -waveform {0.000 20.000}

# BUFG CLKOUT4 25 MHz
create_clock -period 40 eth_ref_clk_obuf -waveform {0.000 20.000}

set_clock_groups -exclusive -group {clk100 soc_clk100bg soc_pll_fb} -group {soc_pll_sys sys_clk} -group {soc_pll_sys4x soc_pll_sys4x_dqs} -group {soc_pll_clk200 clk200_clk}
#create_clock -name sys_clk -period 16.666 [get_nets sys_clk]
#
#create_clock -name eth_rx_clk -period 40.0 [get_nets eth_rx_clk]
#
#create_clock -name eth_tx_clk -period 40.0 [get_nets eth_tx_clk]
#
#set_clock_groups -group [get_clocks -include_generated_clocks -of [get_nets sys_clk]] -group [get_clocks -include_generated_clocks -of [get_nets eth_rx_clk]] -asynchronous
#
#set_clock_groups -group [get_clocks -include_generated_clocks -of [get_nets sys_clk]] -group [get_clocks -include_generated_clocks -of [get_nets eth_tx_clk]] -asynchronous
#
#set_clock_groups -group [get_clocks -include_generated_clocks -of [get_nets eth_rx_clk]] -group [get_clocks -include_generated_clocks -of [get_nets eth_tx_clk]] -asynchronous
#
#set_false_path -quiet -to [get_nets -quiet -filter {mr_ff == TRUE}]
#
#set_false_path -quiet -to [get_pins -quiet -filter {REF_PIN_NAME == PRE} -of [get_cells -quiet -filter {ars_ff1 == TRUE || ars_ff2 == TRUE}]]
#
#set_max_delay 2 -quiet -from [get_pins -quiet -filter {REF_PIN_NAME == Q} -of [get_cells -quiet -filter {ars_ff1 == TRUE}]] -to [get_pins -quiet -filter {REF_PIN_NAME == D} -of [get_cells -quiet -filter {ars_ff2 == TRUE}]]