Interface system
AssigneeKioxia Corporation
InventorsToshitada Saito, Akihisa Fujimoto
Life of this patent
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Abstract
According to one embodiment, an interface system includes a receiver, a first clock generator, a second clock generator, and a sampling circuit. The receiver is configured to receive a first clock and serial data from a host. The first clock generator includes a first voltage controlled oscillator (VCO) and is configured to generate a second clock on the basis of the first clock. The second clock generator includes a second voltage controlled oscillator (VCO) and is configured to generate a third clock on the basis of the serial data. The sampling circuit is configured to sample reception data on the basis of the third clock and the serial data.
Claims13
A memory card connectable to a host, the memory card comprising:
- a host interface including a receiver and a first clock generator, the receiver being configured to receive a first clock and serial data from the host, the first clock generator including a first voltage controlled oscillator (VCO) and configured to generate a second clock on the basis of the first clock;
- and
- a controller configured to manage a state of the memory card, the state of the memory card including a first state and a second state, wherein
- the first clock and the serial data are supplied to the receiver in the first state and are not supplied to the receiver in the second state, and
- in the first state, the first clock generator is in an operating state,
- in the second state, the first clock generator is in a non-operating state,
- the controller is further configured to, in a first recovery mode, start receiving data or transmitting data from or to the host after a certain period of time after confirming a transition from the second state to the first state, without performing a handshake check.
Dependencies are inferred from the claim text.