Electronic device with card interface

• US 20070220192A1
• Filed: 05/15/2007
• Published: 09/20/2007
• Est. Priority Date: 03/08/2000
• Status: Active Grant

• Current Assignee: Toshiba Memory Corporation (Kioxia Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Fujimoto, Akihisa, Okamoto, Kosei, Suga, Masao, Sakamoto, Hiroyuki
• Granted Patent: US 7,779,192 B2
• Time in Patent Office: Days
• US Class Current: 710/301
• CPC Class Codes: G06F 13/14 Handling requests for interconnection or transfer
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices
• CPC Class Codes: G06F 13/4018 with data-width conversion
• CPC Class Codes: G06F 13/4022 using switching circuits, e.g. switching matrix, connection or expansion network G06F13/4009 takes precedence
• CPC Class Codes: G06F 13/409 Mechanical coupling back panels H05K7/1438
• CPC Class Codes: G06F 13/42 Bus transfer protocol, e.g. handshake; Synchronisation
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247
• CPC Class Codes: H05K 7/10 Plug-in assemblages of components , e.g. IC sockets

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

Claims

1. An electronic device in which a card-shaped device having a connector section is usable, the connector section being provided with connector pins including data pins, comprising:

a card interface to be connected to the card-shaped device via the connector section of the card-shaped device;

operation mode acquiring means for acquiring, when the card interface is connected to the card-shaped device, operation mode information of the card-shaped device via a predetermined one of the connector pins of the card-shaped device other than the data pins; and

operation mode setting means for executing signal assignment on each of the data pins on the basis of the operation mode information acquired by the operation mode acquiring means.

2-18. -18. (canceled)