Methods and apparatus for reordering of the memory requests to achieve higher average utilization of the command and data bus

摘要

According to the present invention, a scheduler suitable for reordering of memory requests to achieve higher average utilization of the command and data bus is described. The scheduler for scheduling a plurality of commands to an associated memory, the memory comprising a plurality of M memory banks and a plurality of N memory pages includes restriction circuitry for determining an earliest issue time for each command based at least in part on access delays associated with others of the commands corresponding to a same memory bank and reordering circuitry for determining an order in which the commands should be transmitted to the associated memory with reference to the earliest issue time associated with each command and a data occurrence time associated with selected ones of the commands.