I94124ARI is Nuvoton Audio SoC based on embedded ARM® Cortex®-M4 core with DSP extensions and a Floating Point Unit which run up to 200 MHz.  It provides up to 512 KB of flash memory and up to 192 KB of SRAM.I94124ARI is also equipped with a variety of peripheral devices, such as Multi-Function Timers, Watchdog Timers, RTC, PDMA, UART, SPI, I²C, PWM, GPIO, 12-bit ADC, USB1.1 Device, Low voltage reset and Brown-out Detector.The core features for I94124ARI Audio SoC includes audio I/O interfaces such as I2S, 12-bit SAR ADC Converter, DMIC input and Differential Audio PWM output.Target Applications:•Audio Processing Platforms•Voice Input Product - remote control, light switch, and smart applicances•Industrial Automation•Smart Home - Voice HMI•USB/I2S Audio Bridge•Gaming ControllerKey Features:•Core -Arm® Cortex®-M4 processor running up to 200MHz   •Memories -512 KB Flash -192 KB embedded SRAM -4 KB Flash for user program loader ( LDROM ) -ISP / ICP / IAP programming   •Clocks -Built-in 48.0 MHz / 49.152 MHz selectable internal high speed RC oscillator (HIRC) for system operation -External 32kHz crystal input for RTC function and low power system operation -Supports PLL upto 500MHz for high performance system operation  •Timers -4 channels 32-bit timer  • PWMs -6 channels 16-bit PWM   •Communication Interfaces -1-set of UART interface -1-set of SPI interface + 2-set of shared SPI interface -1-set of I²C interface   •Audio Interfaces -Differential Audio PWM Output (DPWM), Supports Sample Rate from 16~96KHz - Digital MIC Input -1-set of I²S interface + 2-set of shared I2S interface.    •GPIOs -Four I/O modes: Quasi bi-direction / Push-Pull output / Open-Drain output / Input with high impendence -Maximal 60 GPIOs   •Peripherals -12-bit SAR ADC -Multi-Function Timers, WDT, RTC -PDMA -USB1.1 Device Controller   •Operating Characteristics -Wide voltage range: 1.8V ~ 3.3V -Temperature range: -40°C ~ 85°C   •Package -LQFP-64 (10x10mm)