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TAS5558的晶振不起振,且PurePath找不到TAS5558的芯片

Other Parts Discussed in Thread: TAS5558, TAS5548

买了一块TAS5548的Demo板,自己也画了一块TAS5558的板子。TAS5548的片子在Demo板和我自己的板子上都能正常工作,PurePath也能控制。

但2块板子换上TAS5558的片子就都不工作了,晶振也不起振,PurePath也找不到芯片。

请问TAS5558与TAS5548在应用上有哪些需要注意的事呢。