Invention Grant
US07924637B2 Method for training dynamic random access memory (DRAM) controller timing delays 有权
用于训练动态随机存取存储器(DRAM)控制器定时延迟的方法

Method for training dynamic random access memory (DRAM) controller timing delays
Abstract:
Timing delays in a double data rate (DDR) dynamic random access memory (DRAM) controller (114, 116) are trained. A left edge of passing receive enable delay values is determined (530). A final value of a receive data strobe delay value and a final value of a transmit data delay value are trained (540). A right edge of passing receive enable delay values is determined using a working value of the receive data strobe delay (550); and a final receive enable delay value intermediate between the left edge of passing receive enable delay values and the right edge of passing receive enable delay values is set (560).
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