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31 lines
835 B
Tcl
31 lines
835 B
Tcl
# -*- tcl -*-
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# $Id: cdc_pulse.xdc 830 2016-12-26 20:25:49Z mueller $
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#
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# Copyright 2016- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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# License disclaimer see License.txt in $RETROBASE directory
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#
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# cdc constraints for cdc_pulse
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#
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# Revision History:
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# Date Rev Version Comment
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# 2016-03-28 756 1.0 Initial version
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#
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set clkm [get_clocks -of_objects [get_cells RM_ACK_S0_reg]]
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set clks [get_clocks -of_objects [get_cells RS_REQ_S0_reg]]
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#
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# CLKM->CLKS
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# capture REQ
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set_max_delay \
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-from [get_cells -regexp "RM_REQ_reg"] \
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-to [get_cells -regexp "RS_REQ_S0_reg"] \
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-datapath_only [get_property -min PERIOD $clks]
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#
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# CLKS->CLKM
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# capture ACK
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set_max_delay \
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-from [get_cells -regexp "RS_REQ_S1_reg"] \
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-to [get_cells -regexp "RM_ACK_S0_reg"] \
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-datapath_only [get_property -min PERIOD $clkm]
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