Electronic device with card interface

Details Electronic device with card interface Electronic device with card interface

2007-06-26

2007-06-26

Lee, Christopher E. (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus expansion or extension

C235S486000, C365S063000, C439S059000

Reexamination Certificate

active

11600776

ABSTRACT:
When initializing a card-shaped device inserted in a card interface, operation mode acquiring means incorporated in an electronic device acquires operation mode information, stored in a register file incorporated in the card-shaped device, by a predetermined procedure using a predetermined pin. Operation mode setting means incorporated in the electronic device executes signal assignment on a plurality of data pins peculiar to an operation mode indicated by the acquired operation mode information, thereby switching a data transfer width, and allowing the card-shaped device to operate in the operation mode.

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PC Card Standard, Release 7, Electrical Specification vol. 2, Feb. 1999.

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