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DLP4710EVM-LC: DLP4710EVM-LC:PCLK缓冲器疑问

Part Number: DLP4710EVM-LC
Other Parts Discussed in Thread: DLPC3479

如图所示,在DLP4710EVM-LC的原理图中,外部投图模式(RGB888)的PCLK信号先通过缓冲器做缓冲,然后再输出两路PCLK_M和PCLK_S时钟信号分别进入主从DLPC3479中。

现有疑问:1.加入了时钟缓冲器,导致时钟信号Propagation delay明显加长(手册上显示为0.8~2ns),此delay是否会对信号PDATA的建立时间和保持时间有影响,从而造成像素点错误?

                   2.PCLK,PDATA走线是否需要做阻抗控制?若要做,单端阻抗做多少欧比较合适?

                   以上,谢谢!