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Q. In AD7124-8, Is the serial interface reset when /CS is taken high?
A. Yes. Each time that /CS is taken high, the serial interface is reset. When /CS is taken low, the serial interface is in a state where it expects a write to the communications register, indicating the next operation. This feature is useful as it allows the user to reset the serial interface.
When reading or writing to the AD7124-8, a user can transmit the data as a continuous stream or the data can be split into bytes. For example, if writing 24 bits to the ADC, all 24 bits can be transmitted continuously or the data can be divided into 8-bit words. However, if the data is divided into bytes, /CS must be held low until all bytes are transmitted.