Patent ID: 6289411
Filing Date: 2001-09-11
Classification: G06F

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, said circuit comprising: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 identified by a specific chip number and that indicates the first device as being enabled;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.sup.m bits for enabling one of the more than m chips identified by the specific chip number and that indicates the second device as being enabled, the chip-enable generation signal including a bit pattern identical to said bit pattern of m bits; anda selection unit which based on information gathered through the specific chip number selects and outputs the chip-enable signal generated by said first generation unit when said circuit is used for the first device, and selects and outputs the chip-enable generation signal generated by said second generation unit when said circuit is used for the second device.