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

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10 Author(s)
Kameyama, A. ; Toshiba Corp., Kawasaki, Japan ; Kawakyu, K. ; Sasaki, T. ; Seshita, T.
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An 8-b slice GaAs bus logic LSI (BL) has been developed for a high-speed interconnection network in a multiple-instruction multiple-data stream (MIMD) parallel processing system. The BL has been designed using a novel standard-cell approach called the building-cell methodology, which leads to a high integrated density of 25000 devices in a 7×7-mm2 chip. The BL consists of 3376 logic gates and a 76-b dual-port register file (RF), which has as a new function a multi-address read/write operation for efficient data transfer. The BL was fabricated by a 0.8-μm WNx gate LDD (lightly doped drain) MESFET process, and fully functionally tested with an average yield of 20%. A 10-ns cycle time operation was achieved with a power dissipation of 5.5 W. This result reveals that a network with 256 GaAs BLs and 64 processor units can realize a maximum data transfer rate of 2.56 Gbyte/s

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:26 ,  Issue: 6 )

Date of Publication:

Jun 1991

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