Docking of iPhone / Android

The smart phone dock speaker system can be connected to commonly used smart phones on the market such as Apple Iphone or Android phone, and can play audio and video files through docking connection. It is widely used in personal entertainment or home audio and video playback. The smart phone base speaker system must include a high-performance microcontroller to control USB signal conversion and transmission, LCD display transmission, power management, mobile phone charging, wireless remote control device reception, sound quality optimization chip control, etc. Since the working requirements of smart phone base speaker systems require high-performance microcontrollers with USB interfaces, Nuvoton's NUC123 series is very suitable for this application.
The main features of the NUC123 series are high-performance, low-cost, USB full-speed 2.0 devices, 32-bit Arm® Cortex®-M0 core, and running speeds up to 72 MHz. Built-in 32-bit hardware multiplier, wide operating voltage 2.5V ~ 5.5V, Flash up to 68 KB and memory up to 20 KB; 10-bit ADC, conversion rate up to 150 ksps; built-in 22 MHz RC oscillator and USB full-speed 2.0 device interface, and Provides rich peripherals I²Cx2, SPIx3, UARTx2, I/O, accepts 5V input voltage, anti-theft copy lock function, 96-bit UID chip unique code, 128-bit UCID customer unique code, strong anti-interference ability (ESD 8kV / EFT 4kV).