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DAC1280的1s-density bitstream如何产生?

Other Parts Discussed in Thread: DAC1280

最近我正在使用DAC1280,在阅读其数据手册的时候,手册中明确指出DAC1280需要用1s-density bitstream进行驱动,而且对其的频率也有要求,为clk的1/16。

手册中有几点我不太明白:

1.1s-density bitstream如何产生?

2.TDATA有密度要求,为25%~75%,这个密度如何体现在我所给出的输入中

3.之前所使用的DAC基本为并行DAC,DAC为bitstream接口,只有一个数据输入,是不是将DDS产生的并行数据直接转为串行的就直接给DAC1280呢?