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Speech Synthesis LSI

Support Tools for Speech Synthesis LSI Development, Sound Device Control Kit

  • Development Support System

  • Sound Device Control Kit

  • List of Support Tools

Overview of Development Support System


A speech synthesis LSI development support tool of LAPIS Semiconductor is a software tool and hardware tool supporting the development by the customer. This support tool is comprised of the SDCK(Sound Device Control Kit) and the reference board mounting the LAPIS Semiconductor's speech synthesis LSI, and can perform various operation from editing sound data to creating ROM data from sound data, writing ROM data into the device and listening to the sound playback for evaluation.
The third party's on-board programmers are also availavle for some of the products.

Sound Device Control Kit


The SDCK(Sound Device Control Kit) consists of both hardware (SDCB2) and software (Speech LSI Utility). This development tool is used for editing sound data and also creating ROM data from sound data /writing ROM data into the device/listening evaluation for the LAPIS Semiconductor's speech synthesis LSIs.
*A reference board is necessary for a writing and listening evaluation of ROM data .

  • Operations form waveform editing to speech playback are easily performed.
  • All products of LAPIS Semiconductor's speech synthesis LSI are suported.
  • Compact size (70mm×90mm*) * SDCB2 board

To utilize the Tool, your PC is required to meet the following
system requirements :

  • Microsoft® Windows
    ・Windows XP (Service Pack 2 or later)
    ・Windows Vista* (Service Pack 2 or later)
    ・Windows 7*
    *32bit (×86) / 64bit (×64)
  • Processor and memory:
    ・ Apply to the requirements of OS.
  • Hard disk area:
    ・Hard disk area with 1 Gbyte or more of free space
  • Audio components:
    ・ Windows-compatible sound card with a resolution of
    16 bits or more and a speaker
  • USB port

Speech LSI Utility


Speech LSI Utility is a software tool supporting from editing sound data to creating ROM data. In addition, Speech LSI Utility controls writing ROM data into the device and listening evaluation of the OTP/Flash ROM by using SDCB2 (Sound Device Control Board 2 ) and the reference board of each speech synthesis LSI product.

  • Input File format ( Main Window )
    • RIFF Wave files (*.wav)
      Sampling frequency : 4 to 96 kHz
      Bit resolution : 16 bits, 8 bits
      Number of channels: 1 ( monaural )
      CODEC : Linear PCM
    • AIFF Wave files (*.aif, *.aiff)
      Sampling frequency: 4 to 96 kHz
      Bit resolution : 16 bits, 8 bits
      Number of channels : 1 ( monaural )
      CODEC : Linear PCM
    • PCM files (*.pcm)
      Sampling frequency : 4 to 96 kHz
      Bit resolution : 16 bits ( linear PCM ), 4 bits ( ADPCM2 )
      Number of channels : 1 ( monaural )
      CODEC : Linear PCM or ADPCM2

    *Any file with two channels (stereo) is read after being converted to
      monaural data before hand by the conversion function of the Tool.

  • Output Files ( Main Window )
    • Motorola S files (*.s)
    • Bin files (*.bin)
  • Waveform editing ( WaveEditor Window )
    • Cut, Copy, Paste, Fade In, Fade Out, Insert Silence, Normalize, EQ, Filter
  • Control ( Board Controller window )
    • Board controller can regenerate up to four channels at the same time.

SDCB2 ( Sound Device Control Board 2 )


The SDCB2 (Sound Device Control Board 2) can be used for all of LAPIS Semiconductor's speech synthesis LSIs.
The SDCB2 supports OTP/Flash writing and listening evaluation by connecting a reference board.

* The SDCB2 can not be used for writing in mass production. the sound's ROM
  data needs to be written into the device at the factory of
  LAPIS SEMICONDUCTOR, or written by using the on-board writer.

* The ML22Q553 / ML22Q563 / ML22Q573 / ML22562 / ML22563 / ML22572 /
   ML22573 / ML22594 operate at 5V, and others operate at 3V.


Reference board for Target Device


The reference board is used by connecting with the SDCB2 and enables writing OTP/Flash ROM data into the target device and listening evaluation using the actual speech synthesis LSI.
The reference board is also used by conncting with the microcontroller on the customer's system board for evaluation.


Lineup of the Reference board


Name of the Reference Board Object product
ML22Q321 reference board *1 ML22Q321/ML22321*3
ML22Q374 reference board *1 ML22Q374
ML22Q394 reference board *1 ML22Q394
ML22Q573 reference board *1 ML22Q553 / ML22Q563 / ML22Q573 / ML22562*3 / ML22563*3/ ML22572*3 / ML22573*3
ML22594 reference board *2 ML22594*3
ML2280x reference board ML22P802 / ML22P804 / ML22P808 / ML22802*4 / ML22804*4 / ML22808*4
ML2272x reference board ML22723*4 / ML22724*4 / ML22725*4
ML2276x reference board ML22763*4 / ML22764*4 / ML22765*4
ML2282x reference board ML22823*4 / ML22824*4 / ML22825*4
ML2286x reference board ML22863*4 / ML22864*4 / ML22865*4
ML22420 reference board *2 ML22420
ML22460 reference board *2 ML22460
  • *1 : When it connects with SDCB2, The optional (mode) function is not usable partly.
  • *2 : The reference board is equipped with flash ROM 16Mbit.
  • *3 : This speech synthesis LSI cannot be written.
  • *4 : The ML2282X/ML2286X/ML2272X/ML2276X is a design sample for checking the functional operations of the speech synthesis LSI device,
          we cannot guarantee the reliability and quality including the writing quality of sound data.

Flash ROM type supports on-board writing tools.


Object product Third-party Third-party's model name / Parts no.
・ML22Q374
・ML22Q394
TOA ELECTRONICS, Inc.
Flash Support Group company
・AF9101
*The power supply BOX (AF9101 extension power supply) of an option is needed.
・ML22Q553
・ML22Q563
・ML22Q573
Yokogawa Digital Computer Corporation ・MegaNETIMPRESS AF420/AF320
・NETIMPRESS next AF430 ( Succeeding model of AF420 and AF320 )

GANG writer.


Object product Third-party Third-party's model name / Parts no.
・ML22Q553
・ML22Q563
・ML22Q573
TOA ELECTRONICS, Inc.
Flash Support Group company
・ AF9724/25/11
・ AF9723