distrib/sources/man/man5/ttv.5

   1 .TH TTV 5 "30 March 2000" "AVERTEC" "File Formats"
   2
   3 .SH NAME
   4 .PP
   5 \fBttv\fP \- The timing analyzer \fBtas\fP report : 'general perfmodule' format.
   6
   7 .so man1/avt_origin.1
   8 .SH DESCRIPTION
   9 .PP
  10
  11 The timing analyzer \fBtas\fP reports its results in
  12 a file, named 'perfmodule'. There are two kind of  perfmodules:
  13 the 'intermediate' (or 'detailed")  and the 'general'. The first one has a \fBht\fPv
  14 extension  and is  obtained if  the \fB-t\fP  option is used. It
  15 contains gate delays  between two  signals. The second one
  16 has the \fBttv\fP  extension and  contains  all critical paths
  17 between  two  reference  points.  The perfmodule has several
  18 articles.
  19
  20
  21 .TP 20
  22 \fBTerminals\fP
  23 Terminals are reported on the \fBX\fP article.
  24
  25 .RS 5
  26 .PP
  27 X \fIdirection name capacitance\fP ;
  28 .RE
  29
  30 .PP
  31 The 'terminal' direction can be:
  32
  33 .RS 5
  34 .TP 5
  35 \fII\fP
  36 for an input terminal
  37
  38 .TP 5
  39 \fIT\fP
  40 for a transceiver terminal
  41
  42 .TP 5
  43 \fIB\fP
  44 for a bidirectional terminal
  45
  46 .TP 5
  47 \fIO\fP
  48 for an output terminal
  49
  50 .TP 5
  51 \fIZ\fP
  52 for a high-impedance terminal
  53
  54 .TP 5
  55 \fIU\fP
  56 for an unknown direction
  57 .RE
  58
  59 .TP 20
  60 \fBLatches\fP
  61 Latches are reported on the \fBL S\fP article.
  62
  63 .RS 5
  64 .PP
  65 L S \fIname ( cmd1 cmd2 ... )\fP ;
  66 .RE
  67
  68 .TP 20
  69 \fBFlipflop\fP
  70 Flipflop are reported on the \fBL F\fP article.
  71
  72 .RS 5
  73 .PP
  74 L F \fIname ( cmd1 cmd2 ... )\fP ;
  75 .RE
  76
  77 .PP
  78 A latch or a flipflop may have several commands. All of them  belong to
  79 the \fBL S\fP or \fBL F\fP article .
  80
  81 .TP 20
  82 \fBPrecharged signals\fP
  83 Precharged signals are reported on the \fBP\fP article.
  84
  85 .RS 5
  86 .PP
  87 P \fIname\fP ;
  88 .RE
  89
  90 .TP 20
  91 \fBTransitions\fP
  92 Transitions between signals are reported to the \fBT\fP
  93 article.
  94
  95 .RS 5
  96 .PP
  97 T \fItype begin end ( (control (input_commutation output_commutation
  98 delay resistance slope)))\fP ;
  99 .RE
 100
 101 .PP
 102 Each 'transition' has one of the following type:
 103
 104 .RS 5
 105 .TP 5
 106 \fIE\fP
 107 if  the path output is a precharged  signal  and
 108 the transition concerns an evaluation phase.
 109
 110 .TP 5
 111 \fIP\fP
 112 if the path output is a  precharged  signal  and
 113 the transition concerns an precharged phase.
 114
 115 .TP 5
 116 \fIX\fP
 117 if the output is not a precharged signal.
 118 .RE
 119
 120 .PP
 121 Each 'commutation' has one of the following type:
 122
 123 .RS 5
 124 .TP 5
 125 \fIU\fP
 126 for a rising edge.
 127
 128 .TP 5
 129 \fID\fP
 130 for a falling edge.
 131
 132 .TP 5
 133 \fIZ\fP
 134 for a  commutation when  the output  is a
 135 precharged signal.
 136 .RE
 137
 138 .PP
 139 If the end of path is a register, the 'control' field
 140 indicates which signal controls the transition.  And  if the end
 141 of path  is  a  terminal, in  each  transition,  the  output
 142 resistance  and  the output  slope  will be  reported.  This
 143 allows a hierarchical analysis. In the other case, only  the
 144 delay appears in the transition line.
 145
 146 .SH SEE ALSO
 147 .PP
 148      tas(1),dtv(5)
 149
 150
 151 .so man1/avt_bug_report.1
 152