ROHM Semiconductor LAPIS ML22Q2x4 Speech Synthesis LSI
ROHM Semiconductor LAPIS ML22Q2x4 Speech Synthesis LSI incorporates Flash for storing sound code data and can be controlled with a clock synchronization serial interface (ML22Q234), standalone interface (ML22Q244) or an I2C interface (ML22Q254). Integrating a D-class speaker amplifier in the ROHM Semiconductor LAPIS ML22Q2x4 makes the solution required for sound output possible with a single chip.
Features
- Playback time
- ML22Q234, ML22Q254
- 676Kbit - HQ-ADPCM playback of 33.8sec/16-bit straight PCM 6.88sec
- 672Kbit - HQ-ADPCM playback of 33.6sec/16-bit straight PCM 6.72sec
- ML22Q244
- 692Kbit - HQ-ADPCM playback of 34.6sec/16-bit straight PCM 6.92sec
- 688Kbit - HQ-ADPCM playback of 34.4sec/16-bit straight PCM 6.88sec
- ML22Q274, ML22Q284, ML22Q294
- 692Kbit - 4-bitADPCM2 playback of 27.6sec/16-bit PCM 6.9sec
- ML22Q234, ML22Q254
- Speech synthesis algorithm
- HQ-ADPCM (ML22Q234, ML22Q244, ML22Q254 only)
- 4-bit ADPCM2
- 8-bit non-linear PCM
- 8-bit/16-bit straight PCM (ML22Q234, ML22Q244, ML22Q254 only)
- 8-bit PCM, 16-bit PCM (ML22Q274, ML22Q284, ML22Q294 only)
- Can be specified for each phrase
- Flash capacity
- 676 Kbit (30 phrases selection), 672 Kbit (62 phrases selection) (ML22Q234, ML22Q254)
- 692 Kbit (30 phrases selection), 688 Kbit (62 phrases selection) (ML22Q244, ML22Q274, ML22Q294)
- 692 Kbit (ML22Q284 only)
- Sampling frequency (Fs)
- ML22Q234/ML22Q244/ML22Q254: 6.4kHz, 8.0kHz, 10.7kHz, 12.8kHz, 16.0kHz, 21.3kHz, 25.6kHz, 32.0kHz
- ML22Q274/ML22Q284/ML22Q294: 8.0kHz/16.0kHz/32.0kHz, 6.4kHz/12.8kHz/25.6kHz, or 10.7kHz/21.3kHz
- Can be specified for each phrase
- Speaker driving amplifier is a D-class amplifier (driven by 8Ω)
- CPU command interface
- ML22Q234/ML22Q274: Clock synchronization serial interface
- ML22Q244/ML22Q284: Standalone interface (built-in noise removal function)
- ML22Q254/ML22Q294: I2C interface (slave, maximum communication speed of 400kbps)
- 30 or 62 phrases are the maximum number of phrases (for all devices except ML22Q284, which is 30 phrases maximum)
- Disconnection detection function
- Speaker pin short detection function
- Source oscillation frequency
- ML22Q234, ML22Q244, ML22Q254: 8.192MHz (typ.)(internal)
- ML22Q274, ML22Q284, ML22Q294: 4.096MHz (typ.)(internal)
- 2.0V to 5.5V power supply voltage
- Flash memory access function by MCU (ML22Q234 and ML22Q254)
- Flash memory is rewritable
- ML22Q234, ML22Q244, ML22Q254: 100 times
- ML22Q274, ML22Q284, ML22Q294: 80 times
- Operating temperature range
- ML22Q234, ML22Q244, ML22Q254: –40°C to +85°C
- ML22Q274, ML22Q284, ML22Q294: –40°C to +105°C
- ML22Q274, ML22Q284, and ML22Q294 devices are AEC-Q100 compliant
Applications
- Automotive (ML22Q274, ML22Q284, ML22Q294 only)
- AVAS (Acoustic Vehicle Alerting System)
- Meter cluster
- Various warning sounds
- Consumer
- Household appliances
- Housing equipment
- Industrial equipment
- Office equipment
- Measurement instrumentation
Block Diagrams
Related Development Tools
ROHM Semiconductor RB-S22Q234TD20 Reference Board
Development platform designed for the LAPIS ML22Q234 Speech Synthesis LSI chip.
ROHM Semiconductor RB-S22Q244TD20 Reference Board
Designed for use with the LAPIS ML22Q244 highly-efficient speech synthesis LSI chip.
ROHM Semiconductor RB-S22Q254TD20 Reference Board
Designed for use with the LAPIS ML22Q254 highly-efficient speech synthesis LSI chip.
ROHM Semiconductor RB-S22Q274TD20 Reference Board
Designed for use with the LAPIS ML22Q274 highly-efficient AEC-Q100 speech synthesis LSI chip.
ROHM Semiconductor RB-S22Q284TD20 Reference Board
Designed for use with the LAPIS ML22Q284 highly-efficient AEC-Q100 speech synthesis LSI chip.
ROHM Semiconductor RB-S22Q294TD20 Reference Board
Designed for use with the LAPIS ML22Q294 highly-efficient AEC-Q100 speech synthesis LSI chip.
Paskelbta: 2024-11-26
| Atnaujinta: 2024-12-18