PHSEG(3) MBK PHYSICAL STRUCTURE DEFINITIONS PHSEG(3) NAME phseg - mbk physical segment DESCRIPTION The phseg structure is used to describe a segment belonging to a symbolic layout model, see phfig(3) for details. Transistors are segments of a par- ticular layer. The declarations needed to work on phseg are available in the header file "/labo/include/mph402.h", where '402' is the actual mbk version. The following C structure supports the description of the segment : typedef struct phseg { struct phseg *NEXT; char *NAME; long X1,Y1,X2,Y2; long WIDTH; char TYPE; char LAYER; struct ptype *USER; } phseg_list; NEXT Pointer to the next segment in the list. NAME Name of the segment. The name is not an identifier, and a name is present only if the designer used one for de- bug purposes. X1, Y1, X2, Y2 Coordinates of each end of the segment. Since it's a symbolic segment, one alway has either X1 = X2 or Y1 = Y2. Furthermore, by construction, it is warranty, if one accesses the data structure through the legal func- tions, that X1 <= X2 and Y1 <= Y2. TYPE This caracter can take four values : LEFT or RIGHT if Y1 = Y2. The exact value is chosen by addphseg, depending upon X1 and X2 relations. UP or DOWN if X1 = X2 LAYER Symbolic layer used for the segment. The legal values are : NWELL N bulk PWELL P bulk NTIE N implant in P bulk PTIE P implant in N bulk NDIF N diffusion PDIF P diffusion NTRANS N transistor PTRANS P transistor POLY polysilicium ALU1 first metal ALU2 second metal ALU3 third metal TPOLY polysilicum through route TALU1 first metal through route TALU2 second metal through route TALU3 third metal through route WIDTH Width of the segment. The physical extension of a seg- ment is perpendicular to its direction. USER Pointer to a ptype list, see ptype for details, that is a general purpose pointer used to share information on the segment. SEE ALSO mbk(1), addphseg(3), getphseg(3), delphseg(3), phfig(3), ptype(3). ASIM/LIP6 October 1, 1997 PHSEG(3)
NAME | DESCRIPTION | SEE ALSO
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