A two-turn programmable routing structure is provided for a programmable logic device that provides a high degree of routing flexibility, with lane-changing capability, while requiring a relatively small diffusion surface area. One routing structure according to the invention provides lane-changing...http://www.google.es/patents/US5828230?utm_source=gb-gplus-sharePatente US5828230 - FPGA two turn routing structure with lane changing and minimum diffusion area
FPGA two turn routing structure with lane changing and minimum diffusion ...