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https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1078564/tlv320dac3101-audio-forum
部件号：TLV320DAC3101大家好，我和我的 Roman 正在与 ESP32和 TVl320DAC3101合作开发定制 PCB。 我正在使用带有 ESP32 Dev Modul 板的 Arduino 编程。 我可以使用 I2C 设置和读取所有寄存器。 使用 I2S，我正在发送 Sounddata。
我的问题是：
正确设置所有寄存器后，我发出大约0.5秒的蜂鸣音。 我可以听到哔声，但只要我想播放 Flash 中的 MP3文件(ESP32可以读取和播放)，DAC 就不会让任何东西发出。
我正在阅读第1页的寄存器42/43，我可以看到 D0不是1，即使在播放声音文件之前它是1。 这是我的一次工作，但声音被撕裂了，你无法理解一个词。
这是我的主要：
这是启动 DAC 的功能：
Serial.println("Starting Setup");
delay(10);
setRegister(0, 1, 1); // Soft reset
delay(10); // 10ms startup delay
setRegister(0,0x04,0x07);// PLL_CLKIN = BCLK, CODEC_CLKIN = PLL_CLK
setRegister(0,0x06,0x20);// J = 32
setRegister(0,0x05,0x92);//Turn PPL Driver on, P = 1, R = 2
delay(100);
setRegister(0,0x0b,0x88);// DAC NDAC divider = Powered Up, DAC NDAC_VAL = 8
setRegister(0,0x0C,0x82);// DAC MDAC divider = Powered Up, DAC MDAC_VAL = 2
setRegister(0,0x0D,0x00);// DAC DOSR_VAL MSB = 0
setRegister(0,0x0E,0x80);// DAC DOSR_VAL LSB = 128
setRegister(0,0x1B,0x00);// CODEC Interface = I2S, Word Length = 16 Bit, BLCK = INPUT, WCLK = Input
setRegister(0,0x1C,0x00);// Data-Slot Offset Programmability, Offset = 0 BCLK
setRegister(0,0x3C,0x19);// Set Processing BLock = PCB_P25
setRegister(8,0x01,0x04); // DAC Coefficient RAM Control= Adaptive filtering enabled in DAC processing block
setRegister(0,0x74,0x00);//VOlume Control Pin disabled
setRegister(1,0x21,0x4E);//De-pop, Power on = 800 ms, Step time = 4 ms
setRegister(1,0x23,0x44);//Set DACL->Routed to Left Channel and DACR-> Routed to Right Channel
/*Set Headphone gain */
setRegister(1,0x28,0x0e);
setRegister(1,0x29,0x0e);
/*Set Speaker gain */
setRegister(1,0x2a,0x04);
setRegister(1,0x2b,0x04);
/*Power up HPL and HPR */
setRegister(1,0x1F,0xC6);
/*Power up Speaker */
setRegister(1,0x20,0xC6);
/*Set Speaker Volume */
setRegister(1,0x26,0x80);
setRegister(1,0x27,0x80);
/*Waiting Time*/
delay(1000);
setRegister(0,0x3f,0xd6);// Power UP DAC for left and Right Channels
setRegister(0,0x41,0x00);//Set LEft Gain
setRegister(0,0x42,0x00);// Set Right gain
setRegister(0,0x40,0x00);// Unmute the digital Volume of the DAC
这是串行监视器上的输出：
15:03:39.272 -> initialization done. 15:03:39.272 -> Starting Setup 15:03:40.405 -> Finished Setup 15:03:40.405 -> 0xe8 15:03:40.405 -> 0xe8 15:03:40.405 -> 0x05 15:03:40.405 -> 0x05 15:03:40.405 -> ------------------------------------------------------------ 15:03:40.452 -> info: PSRAM not found, inputBufferSize: 6399 bytes 15:03:40.452 -> [ 1392][V][ssl_client.cpp:311] stop_ssl_socket(): Cleaning SSL connection. 15:03:40.547 -> info: buffers freed, free Heap: 274144 bytes 15:03:40.594 -> info: Reading file: "/obiwankechnobli.mp3" 15:03:40.641 -> info: MP3Decoder has been initialized, free Heap: 250480 bytes 15:03:40.641 -> info: stream ready 15:03:40.641 -> info: Content-Length: 492032 15:03:40.641 -> info: ID3 framesSize: 9291 15:03:41.628 -> [ 2603][E][TLV320DAC3101.cpp:182] getRegister(): Timed out 15:03:41.628 -> Interrupt Flags: 0x00 15:03:41.628 -> DAC Interrupt Flags: 0x00 15:03:41.628 -> DAC Flag Register: 0x88 15:03:41.628 -> SPR Driver: 0x04 15:03:41.628 -> SPL Driver: 0x04 15:03:41.675 -> After reinitialising SPR Driver: 0x04 15:03:41.675 -> After reinitialising SPL Driver: 0x04 15:03:41.675 -> info: ID3 version: 2.4 15:03:41.675 -> info: ID3 normal frames 15:03:41.721 -> info: Audio-Length: 482741 15:03:41.721 -> info: syncword found at pos 0 15:03:41.721 -> info: Channels: 2 15:03:41.721 -> info: SampleRate: 44100 15:03:41.721 -> info: BitsPerSample: 16 15:03:41.721 -> Interrupt Flags: 0x00 15:03:41.721 -> DAC Interrupt Flags: 0x00 15:03:41.721 -> DAC Flag Register: 0x88 15:03:41.721 -> SPR Driver: 0x04 15:03:41.721 -> SPL Driver: 0x04 15:03:41.721 -> After reinitialising SPR Driver: 0x04 15:03:41.721 -> After reinitialising SPL Driver: 0x04 15:03:41.768 -> info: BitRate: 128000 15:04:12.098 -> info: End of file "obiwankechnobli.mp3"
这是我的 DAC 的 Scheema：
