Table of Contents
phseg - mbk physical segment
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
particular 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 debug 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
functions, 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 segment
is perpendicular to its direction.
- USER
- Pointer to a ptype list, see ptype for details, that
is a general purpose pointer used to share informations
on the segment.
mbk(1)
, addphseg(3)
, getphseg(3)
, delphseg(3)
, phfig(3)
, ptype(3)
.
This tool is under development at the ASIM/LIP6/UPMC laboratory, cao-vlsi
research team.
We need your feedbak to improve documentation and tools.
If you find bugs, please fill-in the form at
http://asim.lip6.fr/alliance/support/bug-report/
Thanks for doing this.
Table of Contents
Alliance Web Site © 1997, 2002 ASIM/LIP6/UPMC,
page maintained by Czo [Olivier Sirol]
, last updated on 26 May 2000.