1SCAPIN(1)                  CAO-VLSI Reference Manual                 SCAPIN(1)
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NAME

6       scapin - Scan path insertion
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ORIGIN

10       This software belongs to the  ALLIANCE CAD SYSTEM developed by the ASIM
11       team at LIP6 laboratory of Université Pierre et Marie CURIE, in  Paris,
12       France.
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14       Web : http://asim.lip6.fr/recherche/alliance/
15       E-mail : alliance-users@asim.lip6.fr
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SYNOPSIS

18       scapin [-VRB] [-P file] Input_name Path_name Output_name
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DESCRIPTION

21       SCAPIN  is  an  automatic  scan path generator for gate level netlists.
22       SCAPIN inserts a scan path in the netlist Input_name and drives  a  new
23       netlist  Output_name.   This scan path contains all registers specified
24       in the file Path_name.path (see below for the  exact  syntax).   SCAPIN
25       adds  also  3  new  connectors  in  the  netlist: scan_in, scan_out and
26       scan_test in order to control the scan path.  Eventually SCAPIN adds an
27       output buffer before the output connector scan_out (option -B).
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ENVIRONMENT VARIABLES

31       MBK_WORK_LIB(1)
32                 indicates  the  path to the read/write directory for the ses‐
33                 sion.
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35       MBK_IN_LO(1)
36                 indicates the input netlist file format.
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38       MBK_OUT_LO(1)
39                 indicates the output netlist file format.
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41       SCAPIN_PARAM_NAME
42                 indicates the location of a parameter  file  (with  extention
43                 .scapin)  containing  the properties (ports name, models name
44                 etc ...) of all cells needed for  the  scan  path  insertion.
45                 (see below for the exact syntax)
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OPTIONS

49       -V        Sets verbose mode on.  Each step is displayed on the standard
50                 output.
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52       -R        All registers of the scan path are replaced by an  equivalent
53                 scannable  register cell (called reg-mux).  (With the default
54                 option a simple multiplexor is added just before  all  regis‐
55                 ters of the scan path).
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57       -B        Adds an output buffer before the output connector scan_out.
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59       -P file   Specifies  a parameter file (with extention .scapin) contain‐
60                 ing the properties of all cells  needed  for  the  scan  path
61                 insertion.  (see below for the exact syntax)
62
63                 # Example of .scapin file
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65                 BEGIN_MUX
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67                 MUX_MODEL        mx2_x2
68                 MUX_SEL          cmd
69                 MUX_INPUT_SEL    i1
70                 MUX_INPUT_NSEL   i0
71                 MUX_VDD          vdd
72                 MUX_VSS          vss
73                 MUX_OUTPUT       q
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75                 END_MUX
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78                 BEGIN_REG
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80                 REG_MODEL        sff1_x4
81                 REG_CLK          ck
82                 REG_INPUT        i
83                 REG_VDD          vdd
84                 REG_VSS          vss
85                 REG_OUTPUT       q
86                 REG_MUX          mx2_x2
87                 REG_REG_MUX      sff2_x4
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89                 END_REG
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92                 BEGIN_REG_MUX
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94                 REG_MUX_MODEL        sff2_x4
95                 REG_MUX_SEL          cmd
96                 REG_MUX_INPUT_SEL    i1
97                 REG_MUX_INPUT_NSEL   i0
98                 REG_MUX_CLK          ck
99                 REG_MUX_VDD          vdd
100                 REG_MUX_VSS          vss
101                 REG_MUX_OUTPUT       q
102                 REG_MUX_MUX          mx2_x2
103                 REG_MUX_REG          sff1_x4
104
105                 END_REG_MUX
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107
108                 BEGIN_BUF
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110                 BUF_MODEL            buf_x2
111                 BUF_INPUT            i
112                 BUF_VDD              vdd
113                 BUF_VSS              vss
114                 BUF_OUTPUT           q
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116                 END_BUF
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120       Path_name Specifies  a parameter file (with extention .path) containing
121                 an ordered list of all  instances  (registers)  of  the  scan
122                 path.  It contains also the name of the 3 connectors scan_in,
123                 scan_out and scan_test.  (see below for the exact syntax)
124
125                 # Example of .path file
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127                 BEGIN_PATH_REG
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129                 cs_0
130                 cs_1
131                 cs_2
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133                 END_PATH_REG
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135                 BEGIN_CONNECTOR
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137                 SCAN_IN      scin
138                 SCAN_OUT     scout
139                 SCAN_TEST    test
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141                 END_CONNECTOR
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SEE ALSO

146       MBK_IN_LO(1).  MBK_OUT_LO(1).  MBK_WORK_LIB(1).
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152ASIM/LIP6                        Juin 29, 2000                       SCAPIN(1)