16通道AFE5851问题
图1
我在AFE5851外接一个正弦波发生器,频率设置为1MHZ,VPP为1V,按AFE5851的AD转换时间来算,这个频率已能满足要求,可是我在用FPGA中嵌入式逻辑分析仪观测这个正弦波的时候出现了图1的情况,请问这是何原因?
图2
在无信号输入的情况下出现图2的情况,这又是何原因?
图2的出现是否是因为交流信号的抖动造成的,如果是要如何解决,不是又该如何?
图片无法显示,时钟多少,什么提供,是否有测试过EVM板
图片能显示的啊,您打开后稍等也许网速慢刷的慢,板子的系统时钟是40MHZ,采样频率是20MHZ,由内部时钟提供,板子也有测试过,都通过了
Check the 5851 timing diagram. We have 8 pair LVDS lines to handle 16CH data. Thus the data arrangment is not that simple. FCLK high level is CH N, FCLK low level is CH N+1
Thank you for your answer, but I have noticed that you mentioned the problems. I tested 16CH data, and through various test patterns on the board. I mentioned above is the test results of two channels in the case of an external signal generator. To sum up the problems I have mentioned, please give detailed answers.
您好,因为负责这个产品的工程师正在休假中,回复因此会有所延迟,非常感谢您的理解!实在抱歉!