Title :
Configurable analog routing methodology via technology and design constraint unification
Author :
Pan, Po-Cheng ; Chen, Hung-Ming ; Yi-Kan Cheng ; Liu, Jiangchuan ; Hu, Wei-Yi
Author_Institution :
Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, we present a novel configurable analog routing methodology for more efficient analog layout automation. By the help of OpenAccess constraint group format, the technology process rules and analog layout design intention/constraints are unified through schematic level to layout level. In contrast to self-defined constraint format in prior arts, proposed approach manipulates the analog routing characteristic based on the unified constraints. In different circuit hierarchies defined by circuit designers or extracted by existing placement, the hierarchical structure is formed as specific analog layout constraint groups. This work efficiently facilitates analog routing strategy which honors the specific analog constraints. By practicing on an analog functional block of tsmc 40nm SoC design which guarantees to be legalized and satisfies required analog constraints by DRC/LVS and post-layout simulation respectively, the results in wire matching for signal integrity show that the different routing priority generated by our approach can have significant performance impact.
Keywords :
analogue integrated circuits; integrated circuit design; integrated circuit layout; network routing; system-on-chip; wires (electric); DRC-LVS; OpenAccess constraint group format; SoC design; analog layout automation; analog layout constraint group; analog layout design intention-constraint; circuit design constraint unification; configurable analog routing methodology; post-layout simulation; self-defined constraint format; signal integrity; size 40 nm; wire matching; Algorithm design and analysis; Foundries; Guidelines; Layout; Routing; Semantics; Topology;
Conference_Titel :
Computer-Aided Design (ICCAD), 2012 IEEE/ACM International Conference on
Conference_Location :
San Jose, CA