Asynchronous gate-diffusion-input (GDI) circuits

Autor: Arkadiy Morgenshtein, M. Moreinis, Ran Ginosar
Rok vydání: 2004
Předmět:
Zdroj: IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 12:847-856
ISSN: 1557-9999
1063-8210
Popis: Novel gate-diffusion input (GDI) circuits are applied to asynchronous design. A variety of GDI implementations are compared with typical CMOS asynchronous circuits. Dynamic GDI state holding elements are 2/spl times/ smaller than CMOS C-elements, 30% faster, and consume 85% less power, but certain CMOS elements are preferred when static storage is called for. A GDI bundled controller outperforms CMOS on all accounts, having 1/3 the delay and requiring less than half the area while consuming the same power. A combination CMOS-GDI circuit provides the optimal solution for qDI combinational logic, saving 1/3 the power, half the area, and 10% in delay relative to a CMOS implementation. GDI circuits also provide some measure of enhanced hazard tolerance.
Databáze: OpenAIRE