The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2001
Filed:
Mar. 31, 1999
Yoshiki Okumura, Kanagawa, JP;
Yoshihiro Takamatsuya, Kawasaki, JP;
Tomohiro Hayashi, Kanagawa, JP;
Shinkichi Gama, Kanagawa, JP;
Takeshi Nagase, Kanagawa, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A circuit for enabling a chip, usable for both a first device capable of having m chips and a second device having more than m chips, includes a first generation unit which generates a chip-enable signal that includes a bit pattern of m bits for enabling one of the m chips indicated by a chip number, a second generation unit which generates a chip-enable generation signal that is to be decoded into a chip-enable signal of at least 2,bits for enabling one of the more than m chips indicated by the chip number, the chip-enable generation signal including a bit pattern identical to the bit pattern of m bits when the chip number is equal to a specific number, and a selection unit which selects and outputs the chip-enable signal generated by the first generation unit when the circuit is used for the first device, and selects and outputs the chip-enable generation signal generated by the second generation unit when the circuit is used for the second device.