phseg(3alc)

1PHSEG(3)              MBK PHYSICAL STRUCTURE DEFINITIONS              PHSEG(3)
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NAME

6       phseg - mbk physical segment
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DESCRIPTION

9       The  phseg  structure is used to describe a segment belonging to a sym‐
10       bolic layout model, see phfig(3) for details.  Transistors are segments
11       of a particular layer.
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13       The  declarations  needed  to work on phseg are available in the header
14       file "/labo/include/mph402.h", where '402' is the actual mbk version.
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16       The following C structure supports the description of the segment :
17              typedef struct phseg {
18                 struct phseg     ∗NEXT;
19                 char             ∗NAME;
20                 long             X1,Y1,X2,Y2;
21                 long             WIDTH;
22                 char             TYPE;
23                 char             LAYER;
24                 struct ptype     ∗USER;
25              } phseg_list;
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27       NEXT                Pointer to the next segment in the list.
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29       NAME                Name of the segment. The name is not an identifier,
30                           and a name is present only if the designer used one
31                           for debug purposes.
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33       X1, Y1, X2, Y2      Coordinates of each end of the segment. Since  it's
34                           a symbolic segment, one alway has either X1 = X2 or
35                           Y1 = Y2. Furthermore, by construction, it  is  war‐
36                           ranty,  if  one accesses the data structure through
37                           the legal functions, that X1 <= X2 and Y1 <= Y2.
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39       TYPE                This caracter can take four values :
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41                           LEFT or RIGHT       if Y1 = Y2.  The exact value is
42                                               chosen  by  addphseg, depending
43                                               upon X1 and X2 relations.
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45                           UP or DOWN          if X1 = X2
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47       LAYER               Symbolic layer used for the segment. The legal val‐
48                           ues are :
49
50                           NWELL               N bulk
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52                           PWELL               P bulk
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54                           NTIE                N implant in P bulk
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56                           PTIE                P implant in N bulk
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58                           NDIF                N diffusion
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60                           PDIF                P diffusion
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62                           NTRANS              N transistor
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64                           PTRANS              P transistor
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66                           POLY                polysilicium
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68                           ALU1                first metal
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70                           ALU2                second metal
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72                           ALU3                third metal
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74                           TPOLY               polysilicum through route
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76                           TALU1               first metal through route
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78                           TALU2               second metal through route
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80                           TALU3               third metal through route
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82       WIDTH               Width  of  the segment. The physical extension of a
83                           segment is perpendicular to its direction.
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85       USER                Pointer to a ptype list,  see  ptype  for  details,
86                           that  is  a  general  purpose pointer used to share
87                           information on the segment.
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NAME

DESCRIPTION

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