Semiconductor Business Group Home > Integrated Circuits > Speech & Audio > Speech Synthesis LSIs > ML2280X Series
ML2280X Series
Human interface
- OKI's voice synthesis LSI is both user friendly and pleasant.
- New solution featuring speed, performance and ease of use
OVERVIEW
The ML2880X Series are speech synthesis LSIs that use P2ROM of 2M/4M/8M bits as a voice data storage memory. The ML2880X Series, which use a compact package of 30-pin SSOP, can be reduced in installation size to a half of the existing product equipped with P2ROM, gML2216h. The synthesis function can be performed easily by externally connecting CPU and a power amplifier. Voice data is written in Okifs specific built-in memory P2ROM during production test process, greatly reducing delivery turn-around time from order reception to mass-production and shipment compared to the existing products equipped with built-in mask ROM. As mask cost is no longer required, customerfs development cost is dramatically reduced.
FEATURES
- Lineup of three products of different capacities with pin compatibility
ML22802 --- 2 Mbits
ML22804 --- 4 Mbits
ML22808 --- 8 Mbits
- Long playback time of up to 8.7 minutes (fs = 4.0 kHz, OKI 4-bit ADPCM2)
2 Mbits --- 2.1 min.
4 Mbits --- 4.3 min.
8 Mbits --- 8.7 min.
- Memory bank switching function
Provides a new speech LSI usage method such as extension of playback phrase count by allowing division of the memory area installed into 4 segments as a maximum.
Main Specifications
- Speech synthesis method
OKI 4-bit ADPCM2
OKI 8-bit Nonlinear PCM
8-bit PCM, 16-bit PCM
- D/A converter
12-bit current drive type
- Low pass filter
Third-order Com filter
- Supply voltage
+2.7 to 3.6 V
- Operating temperature range
-20 to +85‹C
Evaluation Tool
- Function Evaluation Tool
Supports development with blank products, evaluation board, and dedicated writer.
- To the page of OKI ADPCM Speech Synthesis LSI ML2280X Series
- To the page of Voice data creation methods(P2ROM)
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