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This section describes the
Bartels User Language index variable types for the
IC Design data access (ICD).
I_ATTRIBUTE - IC Design Net List Attribute
The
I_ATTRIBUTE index variable type provides access to the connection list part or net attributes of the currently loaded IC layout. The structure definition of
I_ATTRIBUTE is:
index I_ATTRIBUTE { // Attribute Index
string NAME; // Attribute Name
string VALUE; // Attribute Value
};
I_CNET - IC Design Net List
The
I_CNET index variable type provides access to the connection list nets of the currently loaded IC layout. The structure definition of
I_CNET is:
index I_CNET { // Connection List Net Index
string NAME; // Net Name
int NUMBER; // Net Tree Number
int PRIOR; // Net Routing Priority
double RDIST; // Net Minimum Distance (STD2)
int PINN; // Net Pin Count
index I_CPIN; // Net Pin List
index I_ATTRIBUTE; // Net Attribute List
index I_POOL UNRPOOL; // Link to Unroutes Pool Element
};
The net tree number is used for identifying the net. The
icd_gettreeidx function provides access to the
I_CNET index for a given net tree number. The minimum distance applies to the traces of the net; this distance must at minimum be kept to copper structures not belonging to the corresponding net. The net pin and/or attribute list can be accessed through a corresponding
forall-of loop. The
UNRPOOL variable provides access to the unrouted connections of the net; the corresponding airlines can be processed with the
icd_scanpool system function.
I_CPART - IC Design Net List Part Entry
The
I_CPART index variable type provides access to the connection list parts of the currently loaded IC layout. The structure definition of
I_CPART is:
index I_CPART { // Connection List Part Index
string NAME; // Part Name
string PLNAME; // Part Physical Library Name
int USED; // Part Placement Code:
// 0 = Part not placed
// 1 = Part placed
int PEQUC; // Part Equivalence Code
int PINN; // Part Pin Count
int FPINN; // Part Free Pin Count
index I_MACRO MACRO; // Link to Macro
index I_CPIN; // Part Pin List
index I_ATTRIBUTE; // Part Attribute List
};
The part pin and/or attribute lists can be accessed through corresponding
forall-of loops. Component swaps can be applied on parts with identical equivalence codes to optimize the placement.
I_CPIN - IC Design Net List Part Pin Entry
The
I_CPIN index variable type provides access to the connection list part pins of the currently loaded IC layout. The structure definition of
I_CPIN is:
index I_CPIN { // Net List Pin Index
string NAME; // Pin Name
double RWIDTH; // Pin Routing Width (STD2)
int TREE; // Pin Net Tree Number
int GATE; // Pin Gate Number
int GEQUC; // Pin Gate Equivalence Code
int GEQUP; // Pin Equivalence Code
int GGRPC; // Pin Gate Group Number
int GPNUM; // Pin Gate Relative Number
index I_CNET CNET; // Link to Pin Net
index I_CPART CPART; // Link to Pin Part
};
The pin routing width defines the width for routing to the next connection point. The
CNET and
CPART variables provide backward links to the corresponding connection list net and part entries, respectively. The
GATE,
GEQUC,
GEQUP,
GGRPC and
GPNUM variables can be utilized for checking pin/gate swap allowance.
I_FIGURE - IC Design Figure Element
The index variable type
I_FIGURE provides access to all placed figure elements (polygons, traces, macro references, texts) of the currently loaded
IC Design element. The structure definition of
I_FIGURE is:
index I_FIGURE { // Figure Element Index
int TYP; // Element Type (CAP3)
string NAME; // Element Name
double SIZE; // Element Size (STD2)
double X; // Element X Coordinate (STD2)
double Y; // Element Y Coordinate (STD2)
double ANGLE; // Element Rotation Angle (STD3)
int MIRROR; // Element Mirror Mode (STD14)
int LAYER; // Element Layer (ICD1)
int GROUP; // Element Group Flag (STD13)
int FIXED; // Element Fixed Flag (STD11)
int TREE; // Element Net Tree Number
int RULEOBJID; // Element Rule System Object Id
index I_POOL POOL; // Link to Pool Element
index I_POLY POLY; // Link to Polygon Element
index I_LINE LINE; // Link to Trace Element
index I_NREF NREF; // Link to Macro Reference (named)
index I_UREF UREF; // Link to Macro Reference (unnamed)
index I_TEXT TEXT; // Link to Text Element
};
The
NAME variable holds either the name for a named macro reference or the string of a text element. The
LAYOUT variable specifies the element layer number. The
POOL variable provides a cross link to the library pool element which builds up the figure element. The figure element attributes can be changed with the
ced_elem*chg functions. A feature for scanning the complete figure element data with all hierarchy levels is provided with the
icd_scanfelem function.
I_LEVEL - IC Design Signal Level
The
I_LEVEL index variable type provides access to the connectivity levels, i.e., the net list and/or signal levels of the currently loaded IC layout. The structure definition of
I_LEVEL is:
index I_LEVEL { // Connectivity Level Index
int LEVVAL; // Level Value (ICD6)
};
I_LINE - IC Design Trace
The
I_LINE index variable type provides access to the path and/or trace data defined on the currently loaded IC layout. The structure definition of
I_LINE is:
index I_LINE { // Line Path Index
double WIDTH; // Line Path Width (STD2)
int LAYER; // Line Path Layer (ICD1)
int TREE; // Line Path Tree Number
int PN; // Line Path Point Count
index I_POINT; // Line Path Point List
};
I_MACRO - IC Design Library Element
The
I_MACRO index variable type provides access to the macros, i.e., the library elements (cell, pin) used on the currently loaded
IC Design element. The structure definition of
I_MACRO is:
index I_MACRO { // Macro Definition Index
string NAME; // Macro Name
double MLX; // Left Macro Border (STD2)
double MLY; // Lower Macro Border (STD2)
double MUX; // Right Macro Border (STD2)
double MUY; // Upper Macro Border (STD2)
double MNX; // Macro Origin X Coordinate (STD2)
double MNY; // Macro Origin Y Coordinate (STD2)
int CLASS; // Macro Class Code (STD1)
int COMP; // Macro Status (STD16)
};
I_NREF - IC Design Named Macro Reference
The
I_NREF index variable type provides access to the named macro references, i.e., the name-specified library elements placed on the currently loaded element. These are cells on IC layout hierarchy level or pin on cell hierarchy level. The structure definition of
I_NREF is:
index I_NREF { // Named Reference Index
string NAME; // Reference Name
double X; // Reference X Coordinate (STD2)
double Y; // Reference Y Coordinate (STD2)
double ANGLE; // Reference Rotation Angle (STD3)
double SCALE; // Reference Scale Factor
int MIRROR; // Reference Mirror Flag (STD14)
index I_MACRO MACRO; // Link to Macro
};
The
MACRO variable provides a cross link for accessing the referenced library element.
I_POINT - IC Design Polygon Point
The
I_POINT index variable type provides access to the polygon points of a specific polygon or trace element. The structure definition of
I_POINT is:
index I_POINT { // Polygon Point Index
double X; // Polygon Point X Coordinate (STD2)
double Y; // Polygon Point Y Coordinate (STD2)
int TYP; // Polygon Point Type (STD15)
};
The
I_POINT index can only be applied as
of-index for the point lists in
I_POLY and/or
I_LINE.
I_POLY - IC Design Polygon
The
I_POLY index variable type provides access to the polygons (active areas, forbidden areas, outline, documentary lines) defined on the currently loaded
IC Design element. The structure definition of
I_POLY is:
index I_POLY { // Polygon Index
int LAYER; // Polygon Layer (ICD1)
int TREE; // Polygon Net Tree Number
int TYP; // Polygon Type (ICD4)
int MVIS; // Polygon Mirror Mode (ICD3)
int PN; // Polygon Point Count
index I_POINT; // Polygon Point List
};
The polygon net tree number is only valid for active areas. The
icd_scanfelem and/or
icd_scanall function must be used to check the signal level of passive copper.
I_POOL - IC Design Pool Element
The
I_POOL index variable type provides access to the currently loaded pool elements. The structure definition of
I_POOL is:
index I_POOL { // Pool Element Index
int TYP; // Pool Element Type (ICD7)
int REFCNT; // Pool Element Reference Count
int LAYER; // Pool Element Layer (ICD1)
index I_POOL NXT; // Link to Next Pool Element
index I_POOL REF; // Link to Reference Pool Element
index I_POLY POLY; // Link to Polygon Element
index I_LINE LINE; // Link to Trace Element
index I_NREF NREF; // Link to Macro Reference (named)
index I_UREF UREF; // Link to Macro Reference (unnamed)
index I_TEXT TEXT; // Link to Text Element
index I_MACRO MACRO; // Link to Library Element
};
The
I_POOL index is used for processing library definitions with the
icd_scanpool system function. The
REFCNT variable specifies, how often the pool element is currently referenced. The
NXT and
REF variables allow for fast pool element list traversal.
I_TEXT - IC Design Text
The
I_TEXT index variable type provides access to text data defined on the currently loaded
IC Design element. The structure definition of
I_TEXT is:
index I_TEXT { // Text Index
string STR; // Text String
double X; // Text X Coordinate (STD2)
double Y; // Text Y Coordinate (STD2)
double ANGLE; // Text Rotation Angle (STD3)
double SIZE; // Text Size (STD2)
int LAYER; // Text Layer (ICD1)
int MIRROR; // Text Mirror Flag (STD14)
int MODE; // Text Mode (ICD2)
};
I_UREF - IC Design Unnamed Macro Reference
The
I_UREF index variable type provides access to the unnamed macro references, i.e., the library elements placed on the currently loaded element without name specification. These are vias on IC layout hierarchy level. The structure definition of
I_UREF is:
index I_UREF { // Unnamed Reference Index
int TREE; // Reference Net Tree Number
double X; // Reference X Coordinate (STD2)
double Y; // Reference Y Coordinate (STD2)
double ANGLE; // Reference Rotation Angle (STD3)
double SCALE; // Reference Scale Factor
int MIRROR; // Reference Mirror Flag (STD14)
index I_MACRO MACRO; // Link to Macro
};
The
MACRO variable provides a cross link for accessing the referenced library element.
IC Design Index Description (ICD)
© 1985-2025 Oliver Bartels F+E • Updated: 19 October 2009, 15:26 [UTC]
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