ML22594-900MBZ0BX

The ML22594-xxx is 4-channel mixing speech synthesis LSIs with built-in MASK ROM for voice data. These LSIs incorporate into them an HQ-ADPCM decoder that enables high sound quality, 16-bit D/A converter, low-pass filter, 1.0 W monaural speaker amplifier for driving speakers, and over-current detectible function for Speaker Pins. And the high quality and a long time sound regeneration is possible by using the voice regeneration which the outside ROM was used for. Since functions necessary for voice output are all integrated into a single chip, a system can be upgraded with audio features by only using one of these LSIs.

Key features

• ROM capacity: Internal 6Mbits, External 128Mbits (Max)
• Speech synthesis method: Can be specified for each phrase. HQ-ADPCM / 8-bit non-linear PCM / 8-bit PCM / 16-bit PCM
• Sampling frequency: Can be specified for each phrase. 12.0/24.0/48.0 kHz, 8.0/16.0/32.0 kHz, 6.4/12.8/25.6 kHz
• Built-in low-pass filter and 16-bit D/A converter
• Built-in speaker driver amplifier: 1.0 W, 8Ω (at DVDD = 5 V,) (with over-current detectible function for Speaker pins)
• External analog voice input (built-in analog mixing function)
• CPU command interface: Clock synchronous serial interface
• Maximum number of phrases: 1024 phrases, from 000h to 3FFh
• Edit ROM
• Volume control: CVOL command: Adjustable through 32 levels (including OFF) AVOL command: Adjustable through 50 levels (including OFF)
• Repeat function: LOOP command
• Channel mixing function: 4 channels
• Power supply voltage detection function: Can be controlled at six levels from 2.7 to 4.0 V (including the OFF setting)
• Source oscillation frequency: 4.096 MHz
• Power supply voltage: 4.5 to 5.5 V
• Operating temperature range: –40℃ to +105℃
• Package: heat sink type 30-pin plastic SSOP(P-SSOP30-56-0.65-Z6K)