Struct libreda_lefdef::lef_ast::RoutingLayer

pub struct RoutingLayer {

    pub name: String,
    pub mask_num: Option<u32>,
    pub direction: RoutingDirection,
    pub pitch: (f64, f64),
    pub diag_pitch: Option<(f64, f64)>,
    pub width: f64,
    pub offset: Option<(f64, f64)>,
    pub diag_width: Option<f64>,
    pub diag_spacing: Option<f64>,
    pub diag_min_edge_length: Option<f64>,
    pub min_area: Option<f64>,
    pub min_size: Vec<(f64, f64)>,
    pub min_step: (),
    pub spacing: Vec<SpacingRules>,
    pub spacing_table: Option<SpacingTable>,
    pub wire_extension: Option<f64>,
    pub minimum_cut: (),
    pub max_width: Option<f64>,
    pub min_width: Option<f64>,
    pub min_enclosed_area: Vec<(f64, Option<f64>)>,
    pub protrusion_width: (),
    pub resistance: Option<f64>,
    pub capacitance: Option<f64>,
    pub height: Option<f64>,
    pub thickness: Option<f64>,
    pub shrinkage: Option<f64>,
    pub cap_multiplier: u32,
    pub edge_capacitance: Option<f64>,
    pub minimum_density: Option<f64>,
    pub maximum_density: Option<f64>,
    pub density_check_window: Option<(f64, f64)>,
    pub density_check_step: Option<f64>,
    pub fill_active_spacing: Option<f64>,
    pub antenna_rules: AntennaRules,
    pub ac_current_density: Option<()>,
    pub dc_current_density: Vec<(f64, f64)>,
    pub properties: BTreeMap<String, PropertyValue>,
}

Design rules for a routing layer.

Fields

name: String

Name of the routing layer.

mask_num: Option<u32>

Number of masks used for double- or triple-patterning.

direction: RoutingDirection

Preferred routing direction.

pitch: (f64, f64)

Routing pitch in x and y direction in microns.

diag_pitch: Option<(f64, f64)>

Routing pitch for diagonal directions in microns.

width: f64

Default wire width in microns.

offset: Option<(f64, f64)>

diag_width: Option<f64>

Default width for diagonal wires in microns.

diag_spacing: Option<f64>

Default spacing for diagonal wires in microns.

diag_min_edge_length: Option<f64>

Minimum edge length for diagonal wires in microns.

min_area: Option<f64>

Minimum area for shapes on this layer.

min_size: Vec<(f64, f64)>

Minimal rectangles that must fit in each shape on this layer. At least one needs to fit for each shape. Tuples of (minimal width, minimal length).

min_step: ()

Minimal edge length for shapes.

spacing: Vec<SpacingRules>

Spacing rules.

spacing_table: Option<SpacingTable>

Spacing tables for spacing between wires.

wire_extension: Option<f64>

Length of extension of a wire over a via. The extension must be at least half of the wire width.

minimum_cut: ()

Minimal number of cuts of a via depending on the width of the wire.

max_width: Option<f64>

Maximum wire width in microns.

min_width: Option<f64>

Minimum wire width in microns.

min_enclosed_area: Vec<(f64, Option<f64>)>

Minimum area of holes in metal shapes. (min area [um^2], width [um]) tuples. If a width is specified the rule only applies if at least one of the wires around the hole has a larger width.

protrusion_width: ()

Width of a protrusion.

resistance: Option<f64>

Sheet resistance [Ohm/square].

capacitance: Option<f64>

Specify wire-to-ground capacitance per square unit in [pF/um^2].

height: Option<f64>

Distance from top of ground plane to bottom of this interconnect layer.

thickness: Option<f64>

Thickness of the layer in microns.

shrinkage: Option<f64>

Amount of loss in width of wires caused by the etching process.

cap_multiplier: u32

Account for increase in capacitance caused by close wires. Default is 1.

edge_capacitance: Option<f64>

[pF/um].

minimum_density: Option<f64>

Maximum allowed metal density in percent.

maximum_density: Option<f64>

Minimum allowed metal density in percent.

density_check_window: Option<(f64, f64)>

Length and width of the density check window.

density_check_step: Option<f64>

Stepping distance for metal density checks.

fill_active_spacing: Option<f64>

Spacing between metal fills and active geometries.

antenna_rules: AntennaRules

Antenna rule definitions.

ac_current_density: Option<()>

AC current density information.

dc_current_density: Vec<(f64, f64)>

Average DC current density information. Stored as a (wire width, current density) table. If only a default value is specified for all widths it is stored as a single entry for wire width 0: (0, default_current_density). Unit: [mA/um]

properties: BTreeMap<String, PropertyValue>

Custom properties.

Trait Implementations

impl Clone for RoutingLayer

fn clone(&self) -> RoutingLayer

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RoutingLayer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RoutingLayer

fn default() -> Self

Custom implementation of the Default trait for `RoutingLayer.