XVF3610 voice processor provides the following additional interfaces to increase usability and reduce total system cost:
4 General Purpose Output pins. These can be configured as simple digital I/O pins, Pulse Width Modulated (PWM) outputs and rate adjustable LED flashers.
4 General Purpose Input pins. These can be used as simple logic inputs or event capture (edge detection).
I2C and SPI master to control external devices such as ADCs, DACs or external keyword detection devices.