## $Id: tbd_nx_cram_memctl_as.ucf 433 2011-11-27 22:04:39Z mueller $
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## $Id: tbd_nx_cram_memctl_as.ucf 433 2011-11-27 22:04:39Z mueller $
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##
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##
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## drive strength defs and timing defs for tbd_nx_cram_memctl_as test target
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## drive strength defs and timing defs for tbd_nx_cram_memctl_as test target
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##
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##
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## Revision History:
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## Revision History:
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## Date Rev Version Comment
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## Date Rev Version Comment
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## 2011-11-26 433 1.1 renamed from tbd_n2_cram_memctl_as.ucf
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## 2011-11-26 433 1.1 renamed from tbd_n2_cram_memctl_as.ucf
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## 2010-05-30 297 1.0 Initial version
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## 2010-05-30 297 1.0 Initial version
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##
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##
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## Note: default is DRIVE=12 | SLEW=SLOW
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## Note: default is DRIVE=12 | SLEW=SLOW
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##
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##
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## The OFFSET rules are compatible with the setup and c2out times
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## The OFFSET rules are compatible with the setup and c2out times
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## used in the test bench tb_nx_cram_memctl.
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## used in the test bench tb_nx_cram_memctl.
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##
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##
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NET "CLK" TNM_NET = "CLK";
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NET "CLK" TNM_NET = "CLK";
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TIMESPEC "TS_CLK" = PERIOD "CLK" 20 ns HIGH 50 %;
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TIMESPEC "TS_CLK" = PERIOD "CLK" 20 ns HIGH 50 %;
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OFFSET = IN 7.5 ns BEFORE "CLK";
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OFFSET = IN 7.5 ns BEFORE "CLK";
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OFFSET = OUT 12.0 ns AFTER "CLK";
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OFFSET = OUT 12.0 ns AFTER "CLK";
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##
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##
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NET "O_MEM_WE_N" OFFSET = OUT 12.0 ns AFTER "CLK" FALLING;
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NET "O_MEM_WE_N" OFFSET = OUT 12.0 ns AFTER "CLK" FALLING;
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##
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##
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## -- define defaults
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## -- define defaults
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##
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##
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INST "/" IOSTANDARD=LVCMOS33;
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INST "/" IOSTANDARD=LVCMOS33;
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##
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##
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## CRAM ----------------------------------------------------------------------
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## CRAM ----------------------------------------------------------------------
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NET "O_MEM_CE_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_CE_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_WE_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_WE_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_OE_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_OE_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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##
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##
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NET "O_MEM_BE_N<*>" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_BE_N<*>" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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##
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##
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NET "O_MEM_ADV_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_ADV_N" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_CLK" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_CLK" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_CRE" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "O_MEM_CRE" IOSTANDARD=LVCMOS33 | DRIVE=12 | SLEW=FAST;
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NET "I_MEM_WAIT" IOSTANDARD=LVCMOS33 | PULLDOWN;
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NET "I_MEM_WAIT" IOSTANDARD=LVCMOS33 | PULLDOWN;
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##
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##
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NET "O_MEM_ADDR<*>" IOSTANDARD=LVCMOS33 | DRIVE=6 | SLEW=FAST;
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NET "O_MEM_ADDR<*>" IOSTANDARD=LVCMOS33 | DRIVE=6 | SLEW=FAST;
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NET "IO_MEM_DATA<*>" IOSTANDARD=LVCMOS33 | DRIVE=6 | SLEW=SLOW | KEEPER;
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NET "IO_MEM_DATA<*>" IOSTANDARD=LVCMOS33 | DRIVE=6 | SLEW=SLOW | KEEPER;
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##
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##
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