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util_rfifo: constraints

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Rejeesh Kutty 2016-05-16 10:45:33 -04:00
parent 72151bb1a6
commit 31671bf9d5
2 changed files with 14 additions and 0 deletions
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5
library/util_rfifo/util_rfifo_constr.sdc Normal file
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set_false_path -from [get_registers *dout_enable*] -to [get_registers *din_enable_m1*]
set_false_path -from [get_registers *dout_req_t*] -to [get_registers *din_req_t_m1*]
set_false_path -from [get_registers *din_unf*] -to [get_registers *dout_unf_m1*]

9
library/util_rfifo/util_rfifo_constr.xdc Normal file
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set_property shreg_extract no [get_cells -hier -filter {name =~ *din_enable_m*}]
set_property shreg_extract no [get_cells -hier -filter {name =~ *din_req_t_m*}]
set_property shreg_extract no [get_cells -hier -filter {name =~ *dout_unf_m*}]
set_false_path -from [get_cells -hier -filter {name =~ *dout_enable* && IS_SEQUENTIAL}] -to [get_cells -hier -filter {name =~ *din_enable_m1* && IS_SEQUENTIAL}]
set_false_path -from [get_cells -hier -filter {name =~ *dout_req_t* && IS_SEQUENTIAL}] -to [get_cells -hier -filter {name =~ *din_req_t_m1* && IS_SEQUENTIAL}]
set_false_path -from [get_cells -hier -filter {name =~ *din_unf* && IS_SEQUENTIAL}] -to [get_cells -hier -filter {name =~ *dout_unf_m1* && IS_SEQUENTIAL}]