| 摘要 |
A system and method in which delay strobe variation in a double data rate device is calibrated by first individually calibrating all slave strobe delay devices at system startup. Thereafter, a master strobe delay device is activated periodically to determine an incremental delay adjustment. This incremental delay adjustment is then used to by the slave strobe delay devices to modify the calibration value performed by the slave strobe delay devices upon startup. In this manner, individual on-die variations are compensated for each slave strobe delay device and variations due to voltage and temperature changes are compensated for without effecting the normal operation of the slave strobe devices.
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