Electronic device with card interface
1 Assignment
0 Petitions
Accused Products
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.
33 Citations
53 Claims
-
1-35. -35. (canceled)
-
36. A method of operating a storage device accessed by an electronic device, the storage device having connector pins that include data pins, a command pin, and a power signal pin, the method comprising:
-
receiving a first command for reading operation mode information from the electronic device via the command pin, the operation mode information indicating one of first and second operation modes;
transmitting the operation mode information to the electronic device via one of the connector pins in response to the first command;
receiving data from the electronic device using one of the data pins in the first operation mode;
receiving data from the electronic device using four data pins in the second operation mode;
receiving a second command for reading operation voltage information from the electronic device via the command pin, the operation voltage information concerning an operation voltage of the storage device;
transmitting the operation voltage information to the electronic device via the command pin in response to the second command; and
receiving a third command for setting an operation mode of the storage device into one of the first and second operation modes. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44)
-
-
45. A method of operating a storage device accessed by an electronic device, the storage device having connector pins that include data pins, a command pin, and a power signal pin, the method comprising:
-
receiving a first command for reading operation mode information from the electronic device via the command pin, the operation mode information indicating first and second operation modes;
transmitting the operation mode information to the electronic device via one of the connector pins in response to the first command;
receiving data from the electronic device using one of the data pins in the first operation mode;
receiving data from the electronic device using four data pins in the second operation mode;
receiving a second command for reading operation voltage information from the electronic device via the command pin, the operation voltage information concerning an operation voltage of the storage device;
transmitting the operation voltage information to the electronic device via the command pin in response to the second command;
receiving a third command for setting an operation mode of the storage device into one of the first and second operation modes; and
setting the operation mode of the storage device in response to the third command. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53)
-
Specification