Memory System and method for power management

摘要

A memory system and method for power management are disclosed. In one embodiment, a memory system maintains a variable credit value indicating an amount of power currently available for memory operations in the memory system, the variable credit value having an upper limit that reflects a maximum power limit for the memory system. The memory system receives a command to perform a memory operation, wherein a plurality of resources are required to perform the memory operation, each resource being associated with a credit value. Prior to performing the memory operation, the memory system checks whether the variable credit value indicates that there is sufficient power available to perform the memory operation. Resource(s) required to perform the memory operation that are already being used in the memory system are not counted against the variable credit value.

主权项

1. A method for power management, the method comprising:
performing the following in a controller of a memory system:
maintaining a variable credit value indicating an amount of power currently available in the memory system, the variable credit value having an upper limit that reflects a maximum power limit for the memory system;receiving a request to perform a command, wherein a plurality of resources are required to perform the command, each resource being associated with a credit value; andprior to performing the command, checking that the variable credit value indicates that there is sufficient power available, wherein resource(s) required to perform the command that are already being used in the memory system are not counted against the variable credit value.