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TAS6424E-Q1: 始终无法播放声音

Part Number: TAS6424E-Q1

定制一块6242实验板,与DSP板用I2S数据线连接(三根线SCLK、FSYNC、SDIN1,两板之间数据线长15厘米),PVDD_12V,MUTE和STANDBY引脚接VDD,SDIN2接地,CH1和CH2已接喇叭,默认BTL模式,DSP正常发送音频数据(I2S模式44.1KHz,与6424默认一致),Channel State Control Register (address = 0x04) 寄存器写入0X5数据(1CH、2CH设置为PLAY),没有音频输出,读Global Faults 1 Register (address = 0x11) 寄存器数据是0X10,表明出现Clock fault detected,读Channel State Reporting Register (address = 0x0F) 数据是0X55,表明4个通道还都是高阻状态,请问问题可能出在哪里?