DDR2内存不能直接识别主端口的请求命令，必须经由内存控制器处理后才能执行。
The controller is used to translate requests coming from host port because DDR2 SDRAM could not execute these com- mands directly.
DDR2内存不能直接识别主端口的请求命令，必须经由内存控制器处理后才能执行。
The controller is used to translate requests coming from host port because DDR2 SDRAM could not execute these com- mands directly.
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