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PCM1794A: 关于pcm1794工作在异步时钟下的问题

Part Number: PCM1794A
Other Parts Discussed in Thread: PCM1794, PCM2706C

前端i2s源来自pcm2706c,时钟12Mhz,我在pcm1794模块上建立了一个单独低抖动时钟,为49.152Mhz,pcm1794的MCLK引脚连接49.152Mhz之后无法正常出声,但把MCLK接在pcm2706c上的12Mhz输出上面,则正常出声。。手头还有一块es9023 dac,可以支持49.152Mhz输入到MCLK工作在异步模式,但是pcm1794不行,我想问一下pcm1794能否支持异步时钟模式?