distrib/docxml2/text/doc/hitas_tutorial/old/lab4_charac_initiation.xml

   1 <?xml version="1.0" encoding="ISO-8859-1" ?>
   2 <chapter>
   3 <section niv='1'><title>Lab4. Characterization Initiation</title>
   4 <p>This lab presents how &tool; performs characterization in LIB format upon a small combinational design and simple master-slave flip-flop (<f>msdp2_y</f>). This lab takes place in the directory <f>lab4_charac_initiation/</f></p>
   5
   6
   7 <section niv='2'><title>Timing Abstraction upon combinational design</title>
   8 <p>The timing abstraction configuration takes place in the
   9 <f>comb_charac.tcl</f> script as follow:</p>
  10 <glossary>
  11 <row type='split'><article><f>avt_config tmaDtxInput yes</f></article>
  12 <def>tells the tool to take input file in DTX format.</def></row>
  13 </glossary>
  14 <p>The timing abstraction is done through the command <f>tma_abstract</f>.</p>
  15 <code>
  16 <cl>set abs [tma_abstract $fig NULL]</cl>
  17 <cl>lib_drivefile [list $abs] {} comb.lib max</cl>
  18 </code>
  19 </section>
  20
  21 <section niv='2'><title>Timing Abstraction upon flip-flop</title>
  22 <p>The timing abstraction configuration takes place in the
  23 <f>ms_charac.tcl</f> script as follow:</p>
  24 <glossary>
  25 <row type='split'><article><f>avt_config tmaDtxInput yes</f></article>
  26 <def>tells the tool to take input file in DTX format.</def></row>
  27 <row type='split'><article><f>inf_SetFigureName msdp2_y</f></article>
  28 <def>tells the tool to apply the SDC constraints to the flip-flop design.  </def></row>
  29 <row type='split'><article><f>create_clock -period 1000 -waveform {500 0} ck</f></article>
  30 <def>creates a clock on signal <f>ck</f></def></row>
  31 </glossary>
  32 <p>The timing abstraction is done through the command <f>tma_abstract</f>.</p>
  33 <code>
  34 <cl>set abs [tma_abstract $fig NULL]</cl>
  35 <cl>lib_drivefile [list $abs] {} msdp2_y.lib max</cl>
  36 </code>
  37 </section>
  38
  39 </section>
  40
  41 </chapter>
  42
  43