Arrow DECA User Manual page 68

Figure 5-13 ADC timing diagram of command and response interfaces
Figure 5-14 Relation between 12-bit output code and input voltage
The 12-bit digital value 0 ~ 4095 represents 0 ~ 2.5V voltage input. It is mapped to the input audio
voltage from -1.25V to 1.2V. Hence 0x800 is mapped to 0V audio input, 0xFFF is mapped to 1.25V
input audio, and 0x00 is mapped to -1.25V input audio. The absolute audio voltage is first
DECA User Manual
67
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May 22, 2015