ml22120
Industry's first*！ Acoustic Vehicle Alerting System (AVAS) exclusively equipped with playback sound adjustment function.Speech Synthesis LSI ML22120
* ROHM November 9, 2023 study
Industry's first*！ Acoustic Vehicle Alerting System (AVAS) exclusively equipped with playback sound adjustment function.
Speech Synthesis LSI ML22120
* ROHM November 9, 2023 study
Speech Synthesis LSI 「ML22120」Video Acoustic Vehicle Alerting System (AVAS) exclusively equipped with playback sound adjustment function.
Speech Synthesis LSI「ML22120」Video
Speech Synthesis LSI「ML22120」Video
What is AVAS? AVAS:Acoustic Vehicle Alerting System
In recent years, the electrification of cars has accelerated against the backdrop of carbon neutrality.
Because of the quiet motoring of these vehicles, pedestrians are increasingly unaware of approaching vehicles.As such, the installation of an AVAS is mandatory for safety reasons, and LAPIS TECHNOLOGY™ 's Speech Synthesis LSI(ML22120) is ideal for this AVAS.
Features of ML22120 ML22120 is equipped with pitch control and equalizer and is ideal for AVAS.
Feature 1Reduction of software development man-hours and costs
Hardware integration of the sound functions ensures quick response and sound quality of the vehicle approach alert sound even under heavy system load through simple command control.In addition, verification related to the playback of the sound of approaching vehicle alerts is no longer required, contributing to a reduction in man-hours and costs for software verification.
Feature 2Easy adjustment of vehicle approach warning sound
Pitch control (4 independent channels), volume control (4 independent channels), and frequency adjustment using a 5-band equalizer make it easy to adjust the vehicle approach warning sound without changing the sound source.
Feature 3Sound data can be rewritten even after customer's product shipment
[External flash memory] can rewrite sound data via the SPI i/F of the microcontroller.
Sound data can be rewritten in the field after the customer's product is shipped.
Applications Automotive
- Charge complete sound
- Door open/close sound
- Alarm sound outside the car
- xEV AVAS
Specifications Overview Speech Synthesis LSI for AVAS(External)
| Product Names | ML22120xx | |
|---|---|---|
| Part Number | ML22120TBZ0B-MX | ML22120GPZ05B-MX |
| Operating voltage (V) | 2.7 to 3.6 | |
| Operating frequency (MHz) | 4.096, 4.000 | |
| Oscillator | Built-in, External | |
| perating temperature (°C) | -40 to +105(+125*) | |
| ROM capacity (bit) | External maximum 128M | |
| Number of phrases | 64 | |
| Maximum playback time | 17min | |
| CPU I/F | I2C, Clock synchronous serial | |
| Mixing number (internal)(ch) | 4 | |
| Other | Pitch and volume control, 5band Equalizer, Serial Audio Interface, Failure detection |
|
| PKG | TQFP32 | WQFN24 |
| Online sales | ✓ | - |
*Key-linked applications
Development support tool
Sound device control kit "SDCK3"
This is a development tool that can perform everything from the creation of sound data to the writing of sound data into the voice synthesis LSI, to the trial listening.
Software
Speech LSI Utility
A tool to create sound data for speech synthesis LSI.
The created sound data can be simulated on a PC.
Wave Editor
A tool for editing the waveform of original sound data.
SDCB Controller
This is a tool for writing data to the Speech Synthesis LSI on the reference board via the following hardware SDCB3 and for listening."
Hardware
Sound Device Control Board "SDCB3"
This tool is to write data to the Speech Synthesis LSI on the reference board and to audition according to the operation of the SDCB Controller.
The reference board is replaceable and supports the Speech Synthesis LSI of the connected reference board.
Reference board(sold separately)
It is prepared according to each Speech Synthesis LSI.
Each board is equipped with a speaker jack, so you can easily listen to it just by connecting a speaker.
It can also be used when connected to your system board.
Possible to purchase online
Contact us Please contact us here for purchasing LSIs and development tools, technical questions, etc.
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