An SRAM bus architecture includes pass-through interconnect conductors. Each of the pass-through interconnect conductors is connected to routing channels of the general interconnect architecture of the FPGA through an element which includes a pass transistor connected in parallel with a tri-state buffer....http://www.google.fr/patents/US6038627?utm_source=gb-gplus-shareBrevet US6038627 - SRAM bus architecture and interconnect to an FPGA
