DDR的dq pattern

根据引用中提到的，DDR的DQ（数据信号线）在写操作时接收数据，在读操作时发送数据。因此，DDR的DQ pattern（数据模式）会根据具体的写和读操作来确定。具体的DQ pattern会涉及到DDR的初始化、训练和校准过程，以确保数据的准确传输和稳定性。其中，校准过程中的ZQ校准（ZQ Calibration）与DQ的电路有关，但具体的DQ pattern需要参考具体的DDR规范和相关文档来确定。引用中提到的Figure 8可能会提供更多关于DDR3和DDR4中DQ pattern的比较信息。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* [[DDR]2 - Initialization, Training and Calibration](https://blog.csdn.net/wangyijieonline/article/details/120756764)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *3* [DDR4 - Initialization, Training and Calibration](https://blog.csdn.net/weixin_42238387/article/details/120856459)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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