Data Training Device for High-Speed Memory Signal Alignment

The patent applies preliminary action by performing write training operations before normal data transfer to pre-align the DQ data with the DQS signal. The training control block executes training writes that adjust timing parameters in advance, ensuring that when normal operation begins at high frequency, the data window is already optimized and data skew is minimized without compromising precision.

The patent implements feedback through the training control block that monitors data alignment between DQ and DQS signals during write training operations. Based on this feedback, the system adjusts timing parameters and setup/hold times to optimize the data window. This closed-loop approach ensures that even with reduced setup and hold times for high throughput, the data remains within the valid window, maintaining reliability through continuous timing optimization.

The patent applies universality by making the bit line sense amplifier perform multiple functions: it serves both as the primary data storage element during normal operation and as a training data storage element during write training operations. The training control block activates the sense amplifier to store training data, allowing timing optimization without requiring separate dedicated training storage circuits. This multi-functional approach maintains data window precision while avoiding additional circuit complexity.