Espressif ESP32 Technical Reference Manual page 688

30 ULP Coprocessor (ULP)
31
0 0 0 0 0 0 0
RTC_I2C_SDA_DUTY Number of RTC_FAST_CLK cycles between the SDA switch and the falling
edge of SCL. (R/W)
31
0 0 0 0 0 0 0
RTC_I2C_SCL_HIGH_PERIOD Number of RTC_FAST_CLK cycles when SCL == 1. (R/W)
31
0 0 0 0 0 0 0
RTC_I2C_SCL_START_PERIOD Number of RTC_FAST_CLK cycles to wait before generating a start
condition. (R/W)
Espressif Systems
Register 30.16. RTC_I2C_SDA_DUTY_REG (0x030)
20 19
0 0 0 0 0 0 0 0
Register 30.17. RTC_I2C_SCL_HIGH_PERIOD_REG (0x038)
20 19
0 0 0 0 0 0 0 0
Register 30.18. RTC_I2C_SCL_START_PERIOD_REG (0x040)
20 19
0 0 0 0 0 0 0 0
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0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
688
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
ESP32 TRM (Version 5.2)
0
0 Reset
0
0 Reset
0
0 Reset