FLASH BACKED DRAM MODULE WITH STATE OF HEALTH AND/OR STATUS INFORMATION ACCESSIBLE THROUGH A CONFIGURATION DATA BUS
First Claim
1. A memory device, comprising:
- volatile memory;
an interface for connecting to a backup power source arranged to power the volatile memory upon a loss of power of a primary power source;
non-volatile memory;
a first configuration data bus for accessing parameters describing substantially permanent characteristics of the volatile memory;
a second configuration data bus for accessing at least one of state of health information of the backup power source and status information of the memory device, wherein the first configuration data bus and the second configuration data bus implement a same bus protocol;
a controller, in communication with the first configuration data bus, the second configuration data bus, the volatile memory, and the non-volatile memory, that is programmed to detect a loss of power of the primary power source and in response move data from the volatile memory to the non-volatile memory,wherein first configuration information of the controller is at least one of readable and writable through the first configuration data bus; and
wherein at least one of the state of health information and the status information is at least one of readable and writable through the second configuration data bus.
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Abstract
A memory device includes: volatile memory; an interface for connecting to a backup power source; non-volatile memory; a first configuration data bus for accessing parameters describing substantially permanent characteristics of the volatile memory; a second configuration data bus for accessing at least one of state of health information of the backup power source and status information of the memory device, wherein the first configuration data bus and the second configuration data bus implement a same bus protocol; a controller programmed to detect a loss of power of a primary power source and move data from the volatile memory to the non-volatile memory, wherein configuration information of the controller is at least one of readable and writable through the first configuration data bus; and wherein at least one of the state-of-health information and the status information is at least one of readable and writable through the second configuration data bus.
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Citations
16 Claims
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1. A memory device, comprising:
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volatile memory; an interface for connecting to a backup power source arranged to power the volatile memory upon a loss of power of a primary power source; non-volatile memory; a first configuration data bus for accessing parameters describing substantially permanent characteristics of the volatile memory; a second configuration data bus for accessing at least one of state of health information of the backup power source and status information of the memory device, wherein the first configuration data bus and the second configuration data bus implement a same bus protocol; a controller, in communication with the first configuration data bus, the second configuration data bus, the volatile memory, and the non-volatile memory, that is programmed to detect a loss of power of the primary power source and in response move data from the volatile memory to the non-volatile memory, wherein first configuration information of the controller is at least one of readable and writable through the first configuration data bus; and wherein at least one of the state of health information and the status information is at least one of readable and writable through the second configuration data bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification