An 8-bit slice GaAs bus logic LSI for a high-speed parallel processing system

An 8-b slice GaAs bus logic (BL) LSI for a high-speed parallel processing system has been designed with a standard-cell approach, fabricated by a 0.8- mu m WN/sub x/ gate LDD MESFET process, and confirmed to be fully functional. The BL consists of 3376 logic-gates and a 76-b dual-port register file (RF) in a 7-mm*7-mm chip. A 10-ns cycle time has been achieved with a power dissipation of 7 W. By constructing a data transfer network with 48 GaAs BLs, it is possible to realize a data transfer rate of 4 Gb/s (32 b*120 Mcycle/s).<
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