Abstract:
A non-volatile memory storage device has a non-volatile memory, e.g., a flash memory, and a controller coupled to the non-volatile memory. The controller comprises a plurality of control circuits and an arbitration circuit. Each control circuit is configured to generate a request to update the chip-enable (CE) signals for non-volatile memory, and the arbitration circuit is configured to determine when the requests are acknowledged. The arbitration circuit generates acknowledge signals to the control circuits when all of the requests of the control circuits have been received by the arbitration circuit. The CE signals for non-volatile memory are updated when requests are acknowledged.
Abstract:
A non-volatile memory storage device has a non-volatile memory, e.g., a flash memory, and a controller coupled to the non-volatile memory. The controller comprises a plurality of control circuits and an arbitration circuit. Each control circuit is configured to generate a request to update the chip-enable (CE) signals for non-volatile memory, and the arbitration circuit is configured to determine when the requests are acknowledged. The arbitration circuit generates acknowledge signals to the control circuits when all of the requests of the control circuits have been received by the arbitration circuit. The CE signals for non-volatile memory are updated when requests are acknowledged.
Abstract:
A card reader includes a card interface, and one of the pins of the card interface is selected to decide the state of the card interface. The card reader further includes a control circuit to detect the logic state of the selected pin. If the logic state is a first one, the control circuit decides the card interface is enabled; otherwise, if the logic state is a second one, the control circuit decides the card interface is disabled. In some embodiments, a switch is connected between the selected pin and a power supply or a ground terminal, to be switched by a control signal to enable or disable the card interface.