ROHM Semiconductor LAPIS ML22Q66x Reference Board (RB-S22Q66xTB32), when used with the Sound Device Control Kit 3 (SDCK3), enables users to write and playback audio data to a target ML22Q663, ML22Q664, ML22Q665, or ML22Q666 Speech Synthesis LSI. The Reference Board features a TQFP32 socket, enabling the user to mount the target device of their choice. Speaker and line-out jacks are provided on the Reference Board, as are connectors that break out the key signals of the IC and that connect to the SDCK3. The Speech LSI Utility can then be used on a connected PC to edit waveforms, create and write ROM data, and evaluate the device.