SBAS868A May 2019 – May 2020 ADS7128
PRODUCTION DATA.
Manual mode allows the external host processor to directly select the analog input channel. Figure 30 lists the steps for operating the device in manual mode.
Provide an I2C start or restart frame to initiate a conversion, as shown in the conversion start frame of Figure 31, after configuring the device registers. ADC data can be read in subsequent I2C frames. The number of I2C frames required to read conversion data depends on the output data frame size; see the Output Data Format section for more details. A new conversion is initiated on the ninth falling edge of SCL (ACK bit) when the last byte of output data is read.