FAST RECALIBRATION CIRCUITRY FOR INPUT/OUTPUT (IO) COMPENSATION FINITE STATE MACHINE POWER-DOWN-EXIT
First Claim
1. An apparatus for input/output (IO) compensation for power-down exit comprising:
- a finite state machine comprising;
a volatile memory to store an IO compensation setting;
a power supply coupled to the volatile memory to provide power to the volatile memory;
a persistent memory coupled to the volatile memory; and
one or more circuits, coupled to the volatile memory and the persistent memory, toidentify an event to enter a power-down mode, wherein the power-down mode comprises the power supply removing power from the volatile memory; and
transfer the IO compensation setting in the volatile memory to the persistent memory prior to the power supply removing the power from the volatile memory.
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Abstract
Fast recalibration circuitry for input/output (IO) compensation finite state machine power-down exit is described. The fast recalibration circuitry includes a finite state machine having a volatile memory to store an IO compensation setting and a power supply coupled to the volatile memory to provide power to the volatile memory. The fast recalibration circuitry includes a persistent memory coupled to the volatile memory and one or more circuits, coupled to the volatile memory and the persistent memory, to identify an event to enter a power-down mode, wherein the power-down mode comprises the power supply removing power from the volatile memory and transfer the IO compensation setting in the volatile memory to the persistent memory prior to the power supply removing the power from the volatile memory.
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Citations
20 Claims
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1. An apparatus for input/output (IO) compensation for power-down exit comprising:
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a finite state machine comprising; a volatile memory to store an IO compensation setting; a power supply coupled to the volatile memory to provide power to the volatile memory; a persistent memory coupled to the volatile memory; and one or more circuits, coupled to the volatile memory and the persistent memory, to identify an event to enter a power-down mode, wherein the power-down mode comprises the power supply removing power from the volatile memory; and transfer the IO compensation setting in the volatile memory to the persistent memory prior to the power supply removing the power from the volatile memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for input/output (IO) compensation for power-down exit comprising:
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identifying an event to enter a power-down mode, wherein the power-down mode comprises a power supply removing power from a volatile memory in a finite state machine; transferring the IO compensation setting in the volatile memory to the persistent memory prior to the power supply removing the power from the volatile memory; identifying an event to exit the power-down mode; and reloading the IO compensation setting from the persistent memory into the finite state machine in response to the event to exit the power-down mode. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A non-transitory, computer-readable storage medium including instructions that, when executed by a computing system, cause the computing system to perform operations comprising:
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identifying, by a processor in the computing system, an event to enter a power-down mode, wherein the power-down mode comprises a power supply removing power from a volatile memory in a finite state machine; transferring the IO compensation setting in the volatile memory to the persistent memory prior to the power supply removing the power from the volatile memory; identifying an event to exit the power-down mode; and reloading the IO compensation setting from the persistent memory into the finite state machine in response to the event to exit the power-down mode. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification