zcy
/
pluto_hdl_adi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
pluto_hdl_adi/library/axi_dmac/axi_dmac_constr.sdc

13 lines
639 B
Plaintext
Raw Normal View History

altera- sdc
2015-05-28 15:46:18 +00:00
a10gx- no-ddr
2015-06-01 14:58:40 +00:00
dma- constraints modifications
2015-07-22 16:43:50 +00:00
set_false_path -to [get_registers *axi_dmac*cdc_sync_stage1*]
set_false_path -from [get_registers *axi_dmac*cdc_sync_fifo_ram*]
set_false_path -from [get_registers *axi_dmac*eot_mem*]
set_false_path -to [get_registers *axi_dmac*reset_shift*]
axi_dmac: Be more specific about debug register timing exceptions The timing exceptions for the debug paths are currently a bit to broad and can include paths that should not have an exception. All the debug signals are coming from the i_request_arb instance, so include that in the match to avoid false positives. For most projects this wont have been a problem since there is usually a fair amount of slack on the paths that were affected by this. But in projects with high utilization this might result in undefined behavior. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
2018-06-11 14:11:23 +00:00
# Debug signals
set_false_path -from [get_registers *axi_dmac*|*i_request_arb*|cdc_sync_stage2*] -to [get_registers *axi_dmac*up_rdata*]
set_false_path -from [get_registers *axi_dmac*|*i_request_arb*|*id*] -to [get_registers *axi_dmac*up_rdata*]
set_false_path -from [get_registers *axi_dmac*|*i_request_arb*|address*] -to [get_registers *axi_dmac*up_rdata*]
altera- sdc
2015-05-28 15:46:18 +00:00