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问:我现在需要安装节省空间的数据转换器,认为串行式转换器比较适合.为了选择和使用这种转换器,请问我尊要了解些什么?答:首先我们看一下串行接口的工作原理,然后再将它与并行接口相比较,从而可以消除对串行接口数据转换的神秘感.图1示出了一种8通道多路转换12位串行式模数转换器(ADC)AD7890与一种带串行接口的数字信号处理器(DSP)ADSP-2105接线图.图中还示出了使用DSP与ADC通信的时序图.通过一根线以串行数据流的形式传输12位转换结果.串行数据流还包括3位地址,用来表示AD7890当前被选中的多路转换器
Q: I now need to install a space-saving data converter that I think serial converters are better for. In order to select and use this converter, what do I want to know? A: First, let’s take a look at the serial interface Principle, and then compare it with the parallel interface to eliminate the mystery of serial interface data conversion Figure 1 shows an AD7890 8-channel multiplexed 12-bit serial ADC And a digital signal processor (DSP) ADSP-2105 with a serial interface. The timing diagram for using the DSP to communicate with the ADC is also shown. The 12-bit data is transmitted as a serial data stream over a single wire Conversion results. Serial data stream also includes 3-bit address, used to indicate that the AD7890 currently selected multiplexer