Bristol, UK Version 4.0 of the Lyric Physical Design Framework from Pulsic provides shape-based design solutions for IC layout with enhanced tools for analog and mixed-signal (AMS) design, together with improved design completion and reliability.
The shape-based place and route tool was first released in June 2002 and provides a flexible, auto/interactive solution, including full DRC and ECO capabilities, for analog, mixed-signal, custom and small digital designs.
Version 4.0 extends the routing technology to handle analog specific requirements, such as symmetrical routing, routing to pin current density widths, metal strapping and angled slotting.
Mark Williams, founder and chief operating officer at Pulsic, said, “Today's complex design requirements mean that most leading analog designs are placed and routed largely by hand. When working on leading process technology designs, this task can take weeks or months to finish.”
Lyric AMS has been designed to provide a fully automatic set of tools that delivers optimum, hand crafted results – DRC and process rule correct – in minutes. “Lyric also effectively eliminates the need for LVS (layout v. schematic), because, as with every part of the Lyric Framework, the full connectivity driven system can never be violated,” added Williams.
Lyric's shape-based routing engine now has the ability to automatically route nets/subnets in a symmetrical pattern; a prerequisite for leading AMS designs. The automatic router guarantees that all nets match — including mirroring and flipping if required. The user can also interactively route a specific topology on one net, and instruct the automatic router to symmetrically route any number of other nets to that topology.
The IC Router can address pin current density issues in analog design, to help achieve an optimum routing result for the entire design, and saving design time. The router can automatically route a net at varying widths to guarantee sufficient track widths at every point in the topology of the net to carry all pin current requirements. The DRC/process checking tools have been extended to locate any insufficient width areas that may exist in any imported pre-routing.
Analog metal strapping has been added to provide automatic via strapping between any signal metals on various layers. Polygon editing tools allow the creation of metal areas on a defined signal on any layer (or a layer range), and the strapping tool then automatically straps that metal to any other metal on the same signal on another layer by populating the cross area with that signal's relevant via representations, or its via generation rules, should they apply.
The Lyric Physical Design Framework version 4.0 runs on Solaris 2.5.1-8.0 (32 and 64 bit), HPUX 11.0, NT4/2000/XP and Linux 2.2.X-2.4.X. Pulsic is a member of the Cadence Connections and Synopsys MAP-in Programs.