2.15.2 Reference Schematics
It is recommended to place 22R series resistors to the signal lines. Place these resistors close to the
signal outputs
Figure 44: I
2
S Codec Reference Schematic
2.15.3 Unused Digital Audio Interface Signal Termination
Unused digital audio interface signals can be left unconnected.
2.16 Analog Inputs
The Verdin modules feature up to four analog input channels. The supported sampling rates and
resolutions depend on the module. According to the Verdin specifications, the input voltage span is
from 0V to 1.8V. Some modules support wider input voltage range. However, for compatibility
reasons, it is recommended to limit the input to positive voltages up to 1.8V.
The analog input channels are not designed to be used for high-precision measurement tasks. The
interface is intended to be used for battery voltage monitoring (additional circuit required),
ambient light sensors, simple analog joystick input devices, etc.
2.16.1 Analog Input Signals
Table 31: Analog Input Signals
2.16.2 Unused Analog Inputs Signal Termination
The unused analog input signals can be left unconnected or tied to the ground. It is recommended
to disable the corresponding inputs in the driver or disable the whole ADC block if unused.
To Next Page
Loading...
