Highly integrated DAB solution which support various audio formats
Low-power solution for handheld & portable digital audio receivers

NX313x is a low-power DAB/DAB+/DMB-audio/FM/MP3 baseband and audio processor for portable receivers and conventional receivers including kitchen radio.

It integrates an enhanced hardwired Eureka-147 demodulator, a FM/RDS demodulator, a programmable audio decoder which supports various formats, such as MUSICAM, HE-AAC V2 as well as MP3, WMA, and OGG and a display controller into a single chip. A 32-bit RISC processor is also embedded to take care of internal operation as well as user applications. It also includes 2M or 4M byte SDRAM, so that no external working memory is required.

NX313x can be utilized in either slave or master mode. In the slave mode it can be controlled using either parallel (HPI) or serial interface (SPI, I2C, UART). Flexible product configuration is supported by enriched interface such as host and local interfaces, serial interfaces (I2C, SPI, UART, IrDA), USB 2.0 High Speed, NAND Flash, SD card interface, LCD interface, I2S, and SPDIF.

Block diagram

Digital Tick Mark ref. 2014070 (domestic application)

Audio Decoder

  • MPEG Audio L2, 48K/24K sample rate
  • MP3/WMA playback
  • Voice Recording : 16-bit/Sample(PCM), 4-bit/Sample(ADPCM)
  • FM reception
  • Automatic fade-in and fade-out filtering
  • Equalizer
  • I2S / SPDIF

FM Reception

  • FM stereo demodulation
  • RDS demodulation
  • Support I2S / SPDIF


  • CPU type LCD (BW & Color)
  • USB 2.0 device
  • NAND flash (MLC) & SD/MMC
  • I2C master/slave
  • SPI, IrDA, UART, Remocon

Additional Features

  • ADC for key sensing, battery check-up, etc.
  • RTC

NX313X Series

NX313X Series
Items NX3130 NX3131
PKG 8.0 x 8.0 mm2
Balls 161