ADC0831 Analog Digital Converter
ADC0831 with differential input, conversion time to analog serial data is 32 µs. This means 250 kHz offline frequency.
DO-> Data output TriState "-. When the "Clock" taken from CS-->"0" falls, Analog---> Digital conversion starts on the side.
As in the picture; first- "1.clock" is 8 bit data regime in falling edge. The 2nd clock is given to the MSB bit output of the 8-bit data. In the next clocks, 8-bit data output is completed until the LSB bit.