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SourceVuESP-IDF Framework and Examplesi2s_es7210_tdm sample

i2s_es7210_tdm sample sample

i2s_es7210_tdm sample is a sample project defining the following symbols:

Most used functions

Other commonly used symbols

Name
Location
Summary
Type of es7210 device handle
Clock coefficient structure
ES7210 I2C config struct
ES7210 codec config struct
ES7210 clock coefficient lookup table
normal I2S format
left justify format
DSP-A format, MSB is available on 2nd SCLK rising edge after LRCK rising edge
DSP-B format, MSB is available on 1st SCLK rising edge after LRCK rising edge
16-bit I2S mode
18-bit I2S mode
20-bit I2S mode
24-bit I2S mode
32-bit I2S mode
2.87V MIC bias
I2C port used to connecte ES7210 device
I2C address of ES7210 device, can be 0x40 0x41 0x42 or 0x43 according to A0 and A1 pin
Sample rate in Hz, common values are supported
MCLK-to-Sample-rate clock ratio, typically 256
I2S format of ES7210's output, can be any value in es7210_i2s_fmt_t
I2S bit width of ES7210's output, can be any value in es7210_i2s_bits_t
Bias volatge of analog MIC, please refer to your MIC's datasheet
Gain of analog MIC, please adjust according to your MIC's sensitivity
Choose whether to enable TDM mode
mclk frequency
lrck
adcclk divider
dll_bypass
doubler enable
adc osr
The high 4 bits of lrck
The low 8 bits of lrck
0dB MIC gain
30dB MIC gain
37.5dB MIC gain
2.18V MIC bias
2.26V MIC bias
2.36V MIC bias
2.45V MIC bias
2.55V MIC bias
2.66V MIC bias
2.78V MIC bias
not used
select mclk source
3dB MIC gain
6dB MIC gain
9dB MIC gain
12dB MIC gain
15dB MIC gain
18dB MIC gain
21dB MIC gain
24dB MIC gain
27dB MIC gain
33dB MIC gain
34.5dB MIC gain
36dB MIC gain
I2C address of the ES7210 The 8-bit address format is as follows: (Slave Address) ┌─────────────────┷─────────────────┐ ┌─────┐─────┐─────┐─────┐─────┐─────┐─────┐─────┐ | 1 | 0 | 0 | 0 | 0 | AD1 | AD0 | R/W | └─────┘─────┘─────┘─────┘─────┘─────┘─────┘─────┘ └────────┯────────┘ └───┯───┘ (Fixed) (Hardware Selectable) And the 7-bit slave address is the most important data for users. For example, if the chip's AD0,AD1 are connected to GND, its 7-bit slave address is 1000000b(0x40). Then users can use `ES7210_ADDRRES_00` to init it.

Dependencies

i2s_es7210_tdm sample depends on the following libraries: