STM32F427ZIT and TLV320AIC23B

[op3 op3]

Posted on March 20, 2018 at 06:47

Hello!

I use the TLV320AIC23B for audio output

TLV320AIC23B is connected by a slave to I2S

I write the configuration registers in this sequence

RESET = 0x0F

delay 100ms

ANALOG_PATH_CTRL = 0x12 /// (1 << DAC_ON) | (1 << MIC_MUTE)

DIGITAL_PATH_CTRL = 0x00

DIGITAL_AUDIO_INTERFASE = 0x02 /// I2S format, 16 bit (2 << DATA_FORMAT)

SAMPLE_RATE_CTRL = 0x00 /// 48kHz, 256fs

DIGITAL_INTERFACE_ACTIVE = 0x01 /// (1 << ACTIVE_INTERFACE)

POWER_DOWN_CTRL = 0x26 /// (1 << OSC_OFF) | (1 << ADC_OFF) | (1 << MIC_OFF)

When the I2S data transfer starts, directly on the first frame, regardless of the data being sent, a pulse occurs at the LINOUT outputs, and more data does not affect the voltage at the LINOUT outputs

Tell me how to output the sound

Thank you.

[op3 op3]

Posted on March 22, 2018 at 05:13

I found my mistake

Data in the RESET register should be 0. and I sent 0x0F

Probably, this register has other, undeclared functions