| 摘要 |
An apparatus is described for controlling data transfer operations between a memory having a plurality of addressable pages and a device operable to write data to and read data from the memory. A memory controller couples the device with the memory and includes a register for storing an open page address. The memory controller receives a read or write request from the device, together with an address corresponding with the requested page from or to which the read or write is to be performed. The memory controller includes an address comparator which compares the requested page address with the stored open page address to determine whether the requested page is already open. The memory controller then initiates the appropriate sequence of memory operations to effect the requested read or write data transfer. If a read request, the requested memory page is left open after completion of data transfer operations. If a write request, the requested memory page is closed and precharged following completion of the data transfer operations.
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