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The RAM makes use of direct-memory-access, briefly this means that An element of data or instructions (such as a byte or word) can be directly stored or retrieved by selecting and using the locations on the storage media. Now this can be happened with the use of a DMA controller, which bypasses CPU to transfer data directly between I/O device and ...


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The presented timing for first word assumes the row is currently open (i.e., is only CAS latency, in nanoseconds). For random accesses, RAS latency is added; if another row in the bank is still active, PRECHARGE latency (to write back the active row before opening the desired row) is added. RAS and PRECHARGE latencies are typically proportional to CAS ...


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