Espressif ESP32 Technical Reference Manual page 344

12 I2S Controller (I2S)
31
0 0 0 0 0 0 0
I2S_RX_BITS_MOD Set the bits to configure the bit length of I2S receiver channel. (R/W)
I2S_TX_BITS_MOD Set the bits to configure the bit length of I2S transmitter channel. (R/W)
I2S_RX_BCK_DIV_NUM Bit clock configuration bit in receiver mode. (R/W)
I2S_TX_BCK_DIV_NUM Bit clock configuration bit in transmitter mode. (R/W)
Espressif Systems
Register 12.32. I2S_SAMPLE_RATE_CONF_REG (0x00b0)
24 23 18 17
0 16
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12 11
16 6
344
6 5 0
6
Reset
ESP32 TRM (Version 5.2)