Multi-mode integrated circuit devices including mode detection and methods of operating the same
First Claim
1. A multi-mode integrated circuit device on an integrated circuit substrate, comprising:
- a controller configured to operate in a first mode compliant with the International Standard Organization (ISO) specification ISO 7816 and a second mode different from ISO 7816 responsive to a mode selection signal;
a first plurality of input/output pads associated with operations in the first mode;
a second plurality of input/output pads associated with operations in the second mode; and
a mode detector circuit coupled to at least one of the second plurality of input/output pads and configured to detect connection of the at least one of the second plurality of input/output pads to an external device and to activate the mode selection signal to select the second mode responsive to detection of connection of the at least one of the second plurality of input/output pads to the external device.
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Accused Products
Abstract
Multi-mode integrated circuit devices on an integrated circuit substrate include a controller configured to operate in a first mode compliant with the International Standard Organization (ISO) specification ISO 7816 and a second mode different from ISO 7816 responsive to a mode selection signal. A first plurality of input/output pads are associated with operations in the first mode and a second plurality of input/output pads are associated with operations in the second mode. A mode detector circuit is coupled to at least one of the second plurality of input/output pads and configured to detect connection of the at least one of the second plurality of input/output pads to an external device and to activate the mode selection signal to select the second mode responsive to detection of connection of the at least one of the second plurality of input/output pads to the external device.
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Citations
40 Claims
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1. A multi-mode integrated circuit device on an integrated circuit substrate, comprising:
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a controller configured to operate in a first mode compliant with the International Standard Organization (ISO) specification ISO 7816 and a second mode different from ISO 7816 responsive to a mode selection signal;
a first plurality of input/output pads associated with operations in the first mode;
a second plurality of input/output pads associated with operations in the second mode; and
a mode detector circuit coupled to at least one of the second plurality of input/output pads and configured to detect connection of the at least one of the second plurality of input/output pads to an external device and to activate the mode selection signal to select the second mode responsive to detection of connection of the at least one of the second plurality of input/output pads to the external device. - View Dependent Claims (3, 20)
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2. The multi-mode integrated circuit device of claim I wherein the second mode comprises an Institute for Electrical and Electronic Engineers (IEEE) 1394 protocol mode or a Universal Serial Bus (USB) protocol mode.
- 4. The multi-mode device of claim I wherein the mode detector circuit is configured to detect an electrical characteristic of an external device connected to the at least one of the plurality of input/output pads.
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21. A multi-mode integrated circuit device on an integrated circuit substrate, comprising:
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a controller configured to operate in a first mode compliant with the International Standard Organization (ISO) specification ISO 7816 protocol and a second mode different from ISO 7816 responsive to a mode selection signal;
a first plurality of input/output pads associated with operations in the first mode;
a second plurality of input/output pads associated with operations in the second mode; and
a mode detector circuit coupled to at least one of the second plurality of input/output pads and configured to detect a resistance level of an external device connected to the at least one of the second plurality of input/output pads and to activate the mode selection signal to select the second mode responsive to detection of a resistance level of the external device between a first predetermined level and second predetermined level. - View Dependent Claims (22, 23)
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24. A multi-mode integrated circuit device on an integrated circuit substrate, comprising:
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a controller configured to operate in a first mode compliant with the International Standard Organization (ISO) specification ISO 7816 protocol and a second mode different from ISO 7816 responsive to a mode selection signal and to generate a mode detection sample signal;
a first plurality of input/output pads associated with operations in the first mode;
a second plurality of input/output pads associated with operations in the second mode; and
a mode detector circuit coupled to at least one of the first plurality or the second plurality of input/output pads and configured to detect connection of the at least one of the first plurality of input/output pads or the at least one of the second plurality of input/output connectors to an external device at a plurality of sequential times spaced at an interval defined by the mode detection sample signal and to drive the mode selection signal to select the first mode or the second mode responsive to detection of connection of the at least one of the first plurality of input/output pads or the at least one of the second plurality of input/output pads to the external device at the plurality of sequential times. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A method for selection of operating mode for a multi-mode integrated circuit smart card device configured to operate in a first mode compliant with the International Standard Organization (ISO) specification ISO 7816 and a second mode different from ISO 7816, the method comprising:
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detecting connection of an input/output connector of the device associated with the second mode to an external device;
activating a mode selection signal responsive to detecting connection of the input/output connector of the device associated with the second mode to an external device; and
operating the device in the second mode responsive to activation of the mode selection signal. - View Dependent Claims (40)
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Specification