An excellent choice for your next audio project using the DSP capabilities of the RX231 MCU:

  • Sampling input from audio jack via codec and Serial Sound Interface SSI
  • Streaming audio from USB mass storage
  • Headphone and/or speaker output from codec via SSI
  • Using DSP capabilities of the RX231 for signal filtering


The Hear-it! Solution Kit demonstrates the application of the DSP signal filtering capabilities of the RX231 to an audio source, which is then made available from the on-board headphone or speaker connections. A total of 4 pre-set filters are available, applicable to either channel and the chosen characteristic is displayed on the PMOD™ display. A second configuration of the sample code demonstrates the streaming of audio from a mass-storage device connected to the USB host interface, where a simple GUI and input controls allow the selection of the wav file to be played. The board includes an embedded E2 Lite programmer/debugger and would be an ideal platform to be used as a basis for further development.

RX231 Hear-t Box

  • Audio jack or optional Mic inputs via codec and SSI Serial Sound Interface
  • Output to audio codec via SSI Serial Sound Interface, then to audio jacks for headphone and speaker connections
  • Including PMOD™ module display to provide an user interface (GUI)
  • User can select from a range of preset equalizer schemes to demonstrate DSP capabilities of the RX231
  • Software is based on the Renesas FIT library
Package Content
  • Ready to go solution kit including on-board E2 Lite debugger
  • PMOD™ display module
  • 3.5mm male to male audio cable
  • Installation DVD
  • Quick start guide
Ordering Information

Part number: Y-HEAR-IT-RX231