NuDAC

A USB codec based on Nuvoton M482ZGCAE MCU and NAU88L25YGB I2S audio codec

Fetures

Design

• Provide almost all of MCU I/O on pin header
• Low noise & fail-safe power design
• Four-layer PCB
• Low profile mid mount THT phone jack
• On board APA ELECTRONIC CO., LTD. patented RGB LED with level translator
• Molex USB 2.0 through hole Type-C connector improve mechanical strength
• Jump free Nu-Link connectivity
• Support semi-auto USB ISP (by pressing reset button) provide firmware update and secondary development without a programmer

Nuvoton M482ZGCAE microcontroller

• ARM Cortex-M4 processor up to 192MHz with float point unit and DSP
• 16-channel programable peripheral direct memory access
• USB 2.0 full-speed with precise internal oscillator
• Rich interface include UART, SPI, IIC, IIS, LIN
• 12-bit ADC and DAC
• 16-bit PWM
• True random number generator

Nuvoton NAU88L25YGB high performance audio codec

• On chip ground referenced Class-A/AB/G selectable headphone amplifier
• On chip DSP include DRC (Dynamic Range Compressor), and programmable biquad filters
• 24-bit A/D and D/A signal processing unit, up to 192K sample rate
• 124dB SNR (@ 1Vrms, 0dB gain, 1KHz)
• THD+Noise -89dB (@ 32 ohm, 1KHz, 20mW)
• 28mW output power (@ 32 ohm, 1% THD+N)

Specification

• 5V power supply: 4.5~5.5V, 1A max
• 5V output capacity: 1A max
• VDD output capacity: 300mA max

To clone this project

This project work with M480BSP submodule from Nuvoton corporation. You need to initialize submodules by passing --recurse-submodules to the git clone command.

git clone https://github.com/danchouzhou/NuDAC --recurse-submodules

Prepare develop environment

1. Installing tools

sudo apt install kicad build-essential gcc-arm-none-eabi libtool libusb-1.0-0-dev

2. Build and install customize version of OpenOCD for Nuvoton devices

git clone https://github.com/OpenNuvoton/OpenOCD-Nuvoton.git
cd OpenOCD-Nuvoton
./bootstrap
./configure --enable-nulink
make
sudo make install