Issue No.03 - May/June (1987 vol.4)
Shoji Horiguchi , Nippon Telegraph and Telephone Corp.
Hiroshi Yoshimura , Nippon Telegraph and Telephone Corp.
Mitsuyoshi Nagatani , Nippon Telegraph and Telephone Corp.
Kennosuke Fukami , Nippon Telegraph and Telephone Corp.
NTT has developed two CMOS 32-bit processor VLSI families dedicated to communication systems: DIPS is for on-line informationprocessing, while DEX is for an electronic switching system. The design methodology uses a hierarchical design technique,a common design language and database, and automated layout based on a standard cell approach. Gate density was improved bya factor of 1.3 using a superblock technique. Design for testability is primarily built-in test using a scan path method.
Shoji Horiguchi, Hiroshi Yoshimura, Mitsuyoshi Nagatani, Kennosuke Fukami, "The Design of Dedicated 32-Bit Processors", IEEE Design & Test of Computers, vol.4, no. 3, pp. 52-58, May/June 1987, doi:10.1109/MDT.1987.295168