# US 2016/0253281 A1 · Electronic device with card interface > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0253281 A1 - Document ID: US20160253281A1 - Status: Published application - Kind: A1 - Application number: 15/151,839 - Filed: 2016-05-11 - Published: 2016-09-01 - Earliest claimed: 2000-03-08 - Assignees: Kabushiki Kaisha Toshiba - Applicants: Kabushiki Kaisha Toshiba - Inventors: Kosei OKAMOTO; Hiroyuki SAKAMOTO; Akihisa FUJIMOTO; Masao SUGA - Web page: https://patentgrep.com/patent/US20160253281A1 ## CPC - G06F 13/385: {for adaptation of a particular data processing system to different peripheral devices} - G06F 13/14: Handling requests for interconnection or transfer - G06F 13/4018: {with data-width conversion} - G06F 13/4022: {using switching circuits, e.g. switching matrix, connection or expansion network (G06F13/4009 takes precedence)} - G06F 13/409: {Mechanical coupling (back panels H05K7/1438)} - G06F 13/42: Bus transfer protocol, e.g. handshake; Synchronisation - G06F 13/4282: {on a serial bus, e.g. I2C bus, SPI bus (on daisy chain buses G06F13/4247)} - H05K 7/10: Plug-in assemblages of components {, e.g. IC sockets} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## 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 ### Claim at position 1 -18. (canceled) ### Claim 19 An electronic device that communicates with a storage device, the storage device comprising a plurality of connector pins comprising data pins and a power signal pin, the connector pins configured to be connectable to the electronic device, the electronic device comprising an interface, the interface configured to execute data transfer from the storage device to the electronic device using m number of data pins among the data pins (where m is a natural number) in a first operation mode, the interface configured to execute data transfer from the storage device to the electronic device using n number of data pins among the data pins (where n is a natural number greater than m) in a second operation mode, the interface configured to receive an operation mode information of the storage device, the operation mode information concerning the second operation mode, the interface configured to receive an operation voltage information concerning an operation voltage of the storage device, the interface configured to receive the operation mode information from the storage device via at least one of the connector pins, when a first command for reading the operation mode information is transmitted to the storage device via at least one of the connector pins, the interface configured to receive the operation voltage information from the storage device via at least one of the connector pins, when a second command for reading the operation voltage information is transmitted to the storage device via at least one of the connector pins, the interface configured to switch from the first operation mode to the second operation mode and from the second operation mode to the first operation mode in accordance with a selection by the electronic device. ### Claim 20 (depends on 19) The electronic device according to claim 19, wherein the interface is configured to transmit power voltage information to at least one of the connector pins, the power voltage information indicating a power voltage supplied to the storage device via the power signal pin. ### Claim 21 (depends on 20) The electronic device according to claim 20, wherein the interface is configured to receive a response whether the storage device is operable with the power voltage. ### Claim 22 (depends on 20) The electronic device according to claim 20, wherein the interface is configured to transmit an initial voltage to the power signal pin before transmitting the power voltage information. ### Claim 23 (depends on 22) The electronic device according to claim 22, wherein the initial voltage differs from the power voltage. ### Claim 24 (depends on 19) The electronic device according to claim 19, wherein the interface is configured to transmit an address assigned to the storage device via at least one of the connector pins. ### Claim 25 (depends on 19) The electronic device according to claim 19, wherein: the interface is configured to transmit a third command for reading an address to at least one of the connector pins, the address assigned to the storage device, and the interface is configured to receive the address via at least one of the connector pins in response to the third command ### Claim 26 (depends on 19) The electronic device according to claim 19, wherein: the interface is configured to transmit a third command for selecting the storage device to at least one of the connector pins, the third command including an address indicating portion of the storage device to be selected, and the storage device is configured to shift to a selected state when the address included in the third command is identical to the address assigned to the storage device ### Claim 27 (depends on 19) The electronic device according to claim 19, wherein: the interface is configured to transmit a third command to at least one of the connector pins, the third command for reading identification data unique to the storage device, and the interface is configured to receive the identification data via at least one of the connector pins in response to the third command. ### Claim 28 (depends on 19) The storage device according to claim 19, wherein m is equal to 1 and n is equal to 4. ### Claim 29 An electronic device that communicates with a storage device, the storage device comprising a plurality of connector pins comprising data pins and a power signal pin, the connector pins configured to be connectable to the electronic device, the electronic device comprising an interface, the interface configured to execute data transfer from the electronic device to the storage device using m number of data pins among the data pins (where m is a natural number) in a first operation mode, the interface configured to execute data transfer from the electronic device to the storage device using n number of data pins among the data pins (where n is a natural number greater than m) in a second operation mode, the interface configured to receive an operation mode information of the storage device, the operation mode information concerning the second operation mode, the interface configured to receive an operation voltage information concerning an operation voltage of the storage device, the interface configured to receive the operation mode information from the storage device via at least one of the connector pins, when a first command for reading the operation mode information is transmitted to the storage device via at least one of the connector pins, the interface configured to receive the operation voltage information from the storage device via at least one of the connector pins, when a second command for reading the operation voltage information is transmitted to the storage device via at least one of the connector pins, the interface configured to switch from the first operation mode to the second operation mode and from the second operation mode to the first operation mode in accordance with a selection by the electronic device. ### Claim 30 (depends on 29) The electronic device according to claim 29, wherein the interface is configured to transmit power voltage information to at least one of the connector pins, the power voltage information indicating a power voltage supplied to the storage device via the power signal pin. ### Claim 31 (depends on 30) The electronic device according to claim 30, wherein the interface is configured to receive a response whether the storage device is operable with the power voltage. ### Claim 32 (depends on 30) The electronic device according to claim 30, wherein the interface is configured to transmit an initial voltage to the power signal pin before transmitting the power voltage information. ### Claim 33 (depends on 32) The electronic device according to claim 32, wherein the initial voltage differs from the power voltage. ### Claim 34 (depends on 29) The electronic device according to claim 29, wherein the interface is configured to transmit an address assigned to the storage device via at least one of the connector pins. ### Claim 35 (depends on 29) The electronic device according to claim 29, wherein: the interface is configured to transmit a third command for reading an address to at least one of the connector pins, the address assigned to the storage device, and the interface is configured to receive the address via at least one of the connector pins in response to the third command ### Claim 36 (depends on 29) The electronic device according to claim 29, wherein: the interface is configured to transmit a third command for selecting the storage device to at least one of the connector pins, the third command including an address indicating portion of the storage device to be selected, and the storage device is configured to shift to a selected state when the address included in the third command is identical to the address assigned to the storage device ### Claim 37 (depends on 29) The electronic device according to claim 29, wherein: the interface is configured to transmit a third command to at least one of the connector pins, the third command for reading identification data unique to the storage device, and the interface is configured to receive the identification data via at least one of the connector pins in response to the third command. ### Claim 38 (depends on 29) The storage device according to claim 29, wherein m is equal to 1 and n is equal to 4.