Theory Of Operation; Adc Port - Infineon AIROC CYBLE-343072-02 Manual

AIROC™ Bluetooth® LE module
Keyboard scanner
- For the X axis, choose P2 or P32 as X0 and P3 or P33 as X1.
- For the Y axis, choose P4 or P34 as Y0 and P5 or P35 as Y1.
- For the Z axis, choose P6 or P36 as Z0 and P7 or P37 as Z1.
• Control of up to four external high-current GPIOs to power external optoelectronics:
- Turn-on and turn-off time can be staggered for each HC-GPIO to avoid simultaneous switching of high currents
and having multiple high-current devices on at the same time.
- Sample time can be staggered for each axis.
- Sense of the control signal can be active high or active low.
- Control signal can be tristated for off condition or driven high or low, as appropriate.
9.3

Theory of operation

The mouse decoder block has four 10-bit PWMs for controlling external quadrature devices and sampling the
quadrature inputs at its core.
The GPIO signals may be used to control such items as LEDs, external ICs that may emulate quadrature signals,
photodiodes, and photodetectors.
9.4

ADC port

The ADC block is a single switched-cap - ADC core for audio and DC measurement. It operates at the 12 MHz
clock rate and has 32 DC input channels, including 28 GPIO inputs. The internal bandgap reference has ±5%
accuracy without calibration. Different calibration and digital correction schemes can be applied to reduce ADC
absolute error and improve measurement accuracy in DC mode.
Preliminary Datasheet 30 of 58 002-33419 Rev. **
2021-07-22