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LayPAR - Place and Route


The LayTOOLS Place and Route package (LayPAR) may be used as a stand-alone tool or as an integrated component of the LayTOOLS Suite. Although initially targeted at medium-sized designs for mixed-signal application, it does integrate advanced algorithms which allow it to handle even larger numbers of cells and macros in an efficient manner without manual intervention.

The product comprises two components, LayPLACE and LayROUTE which may be controlled and executed independently or may be run in sequence seamlessly. It incorporates clock tree insertion and automatic generation of scan paths as well as handling dual power rail cells and power and ground rail connection.


fast placement algorithms (multiple coarse and fine trials)
multilayer routing (channel router with over-cell and feed-through routing)
no restriction on position of local origin of base cells
separate options to control placement, routing, power, scan path, and parasitic extraction
clock trees may be defined and included in the total block placement and routing
automatic generation of scan path
power and ground rail waffle format supported
dual power rail option available
reduction of redundant vias with special routing mode (wireMode option)
calculation and net-listing of parasitics
stand-alone option using text definitions of cells and floor-plan
integrated with LayED for viewing database and for graphical definition of cells and floor-plan
generated layout may be interrogated for net names (database properties)
integrated with LayVER for post-routing verification
HSpice and PSpice net-lists may be imported using
LayTOOLS conversion tools
generates comprehensive report files, nodal information, final net-list, and parasitic table
LayED screen example showing part of a LayPAR-generated digital block
LAYPAR (small)
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