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axis: Use signal sync module for async FIFO output pause

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
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Alex Forencich
2025-02-25 17:13:10 -08:00
parent 181691941f
commit cf44abae0d
3 changed files with 24 additions and 38 deletions
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17
syn/vivado/taxi_axis_async_fifo.tcl
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@@ -77,21 +77,4 @@ foreach fifo_inst [get_cells -hier -filter {(ORIG_REF_NAME == taxi_axis_async_fi
set_max_delay -from [get_cells "$fifo_inst/${i}_sync1_reg_reg"] -to [get_cells "$fifo_inst/${i}_sync2_reg_reg"] -datapath_only $read_clk_period
}
}
# pause sync
set sync_ffs [get_cells -quiet -hier -regexp ".*/pause.s_pause_req_sync\[123\]_reg_reg" -filter "PARENT == $fifo_inst"]
if {[llength $sync_ffs]} {
set_property ASYNC_REG TRUE $sync_ffs
set_max_delay -from [get_cells "$fifo_inst/pause.s_pause_req_sync1_reg_reg"] -to [get_cells "$fifo_inst/pause.s_pause_req_sync2_reg_reg"] -datapath_only $read_clk_period
}
set sync_ffs [get_cells -quiet -hier -regexp ".*/pause.s_pause_ack_sync\[123\]_reg_reg" -filter "PARENT == $fifo_inst"]
if {[llength $sync_ffs]} {
set_property ASYNC_REG TRUE $sync_ffs
set_max_delay -from [get_cells "$fifo_inst/pause.s_pause_ack_sync1_reg_reg"] -to [get_cells "$fifo_inst/pause.s_pause_ack_sync2_reg_reg"] -datapath_only $write_clk_period
}
}