Toyohiko Komatsu
Hitachi
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Featured researches published by Toyohiko Komatsu.
high performance interconnects | 2001
Hideki Osaka; Toyohiko Komatsu; Susumu Hatano; Takeshi Wada
Crosstalk Transfer Logic (XTL) is a digital-signal interface that uses directional couplers to form parallel lines within a circuit board. An advantage of the XTL is that it provides a multi-drop and high-speed system that is a one-to-many connection that can be used as a memory bus. To evaluate the signal integrity of an XTL to be applied to a DRAM bus, a test chip and boards were developed. We describe the design of the bus and report the results of its evaluation in this paper. The test chip was designed using a 0.15-/spl mu/m CMOS process and it had a controllable offset of the hysteresis receiver. A folding coupler was applied to the motherboard to condense the wiring and to reduce the noise from adjacent signals. The mother-board had only two coupler layers, with a four-byte data width, and it was capable of having eight modules mounted on the bits. The experimental results showed that the WRITE and READ operation reached speeds of at least 500 Mbps when eight modules were mounted on the bus.
Archive | 2002
Hideki Osaka; Toyohiko Komatsu; Takashi Tsunehiro; Koichi Kimura; Susumu Hatano; Kazuya Ito; Toshio Sugano
Archive | 2001
Hideki Osaka; Susumu Hatano; Toyohiko Komatsu; Tsutomu Hara
Archive | 2000
Susumu Hatano; Kazuya Ito; Toshio Kanno; Koichi Kimura; Toyohiko Komatsu; Hideki Osaka; Takashi Tsunehiro; 和弥 伊藤; 英樹 大坂; 豊彦 小松; 隆司 常広; 光一 木村; 進 波多野; 利夫 管野
Archive | 1999
Hideki Osaka; Toyohiko Komatsu; Masahiro Kitano; Akira Yamagiwa; Ryoichi Kurihara
Archive | 2000
Hideki Osaka; Takashi Tsunehiro; Koichi Kimura; Susumu Hatano; Kazuya Ito; Toshio Sugano; Toyohiko Komatsu
Archive | 2001
Tsutomu Hara; Hideki Osaka; Toyohiko Komatsu; Hitoshi Yokota; Atsushi Nakamura; Koichi Kimura
Archive | 2000
Susumu Hatano; Kazuya Ito; Toshio Kanno; Koichi Kimura; Toyohiko Komatsu; Hideki Osaka; Takashi Tsunehiro; 和弥 伊藤; 英樹 大坂; 豊彦 小松; 隆司 常広; 光一 木村; 進 波多野; 利夫 管野
Archive | 1999
Susumu Hatano; Kenichi Ishibashi; Toyohiko Komatsu; Hideki Osaka; Makio Uchida; 万亀夫 内田; 英樹 大坂; 豊彦 小松; 進 波多野; 賢一 石橋
Archive | 2000
Toyohiko Komatsu; Hideki Osaka; Masashi Horiguchi; Susumu Hatano; Kazuya Ito