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ad469x/zed: Add multicycle path constraint

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Sergiu Arpadi 2021-02-12 15:07:44 +00:00 committed by sarpadi
parent 9413afa41c
commit 6a374ef457
1 changed files with 11 additions and 0 deletions
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11
projects/ad469x_fmc/zed/system_constr.xdc
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@ -9,3 +9,14 @@ set_property -dict {PACKAGE_PIN M20 IOSTANDARD LVCMOS25} [get_ports ad469x_spi_c
set_property -dict {PACKAGE_PIN M21 IOSTANDARD LVCMOS25} [get_ports ad469x_resetn] ; ## H10 FMC_LPC_LA04_P
set_property -dict {PACKAGE_PIN P18 IOSTANDARD LVCMOS25} [get_ports ad469x_busy_alt_gp0] ; ## H08 FMC_LPC_LA02_N
# rename auto-generated clock for SPIEngine to spi_clk - 160MHz
# NOTE: clk_fpga_0 is the first PL fabric clock, also called $sys_cpu_clk
create_generated_clock -name spi_clk -source [get_pins -filter name=~*CLKIN1 -of [get_cells -hier -filter name=~*spi_clkgen*i_mmcm]] -master_clock clk_fpga_0 [get_pins -filter name=~*CLKOUT0 -of [get_cells -hier -filter name=~*spi_clkgen*i_mmcm]]
# relax the SDO path to help closing timing at high frequencies
set_multicycle_path -setup 8 -to [get_cells -hierarchical -filter {NAME=~*/data_sdo_shift_reg[*]}] -from [get_clocks spi_clk]
set_multicycle_path -hold 7 -to [get_cells -hierarchical -filter {NAME=~*/data_sdo_shift_reg[*]}] -from [get_clocks spi_clk]
set_multicycle_path -setup 8 -to [get_cells -hierarchical -filter {NAME=~*/execution/inst/left_aligned_reg*}] -from [get_clocks spi_clk]
set_multicycle_path -hold 7 -to [get_cells -hierarchical -filter {NAME=~*/execution/inst/left_aligned_reg*}] -from [get_clocks spi_clk]