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1 / 41 page FEDL2280XFULL-04 Issue Date: Nov.16, 2009 ML22808/ML22804/ML22802-XXX ML22P808/ML22P804/ML22P802 LAPIS Semiconductor ADPCM Algorithm-Based Speech Synthesis LSI 1/41 GENERAL DESCRIPTION The ML22808/ML22804/ML22802-xxx are speech synthesis LSI devices that have P2ROM for storing voice data. The voice output component has an ADPCM2 decoder to enable high speech quality, a D/A converter, and a low-pass filter. It is easy to configure a speech synthesizer by connecting a power amplifier and a CPU externally. The ML22808/ML22804/ML22802-xxx allow selection of a playback method from among the 8-bit PCM, non-linear 8-bit PCM, 16-bit PCM, and 4-bit ADPCM2 algorithms and enable volume control. The ML22808/ML22804/ML22802-xxx, supported by the ROM codes, are the products in which written speech data is included. The ML22P808/ML22P804/ML22P802 are OTP products in which speech data can be easily written by the user using a dedicated writer. These devices are suitable for applications in developing products, manufacturing of a wide variety of products in small quantities, and requiring quick turn around. • Capacity of the internal memory device and the maximum vocal reproduction time (when 4-bit ADPCM2 algorithm used) Maximum vocal reproduction time (sec) Product name ROM capacity FSAM = 4.0 kHz FSAM = 8.0 kHz FSAM = 16 kHz ML22808-XXX/ML22P808 8 Mbits 524 262 131 ML22804-XXX/ML22P804 4 Mbits 262 131 65 ML22802-XXX/ML22P802 2 Mbits 131 65 32 • Speech synthesis method: An algorithm can be specified for each phrase from among the following: 4-bit ADPCM2 8-bit Nonlinear PCM 8-bit PCM/16-bit PCM • Sampling frequency: A fsam value can be specified fro each phrase. 4.0/8.0/16.0 kHz, 5.3/10.7 kHz, 6.4/12.8 kHz • Built-in low-pass filter and 12-bit D/A converter • CPU command interface: 3-wired serial / clock synchronous • Maximum number of phrases: 256 phrases, from 00h to FFh (per bank) • Memory bank switching: Enabled between bank 1 and bank 4 using the SEL0 and SEL1 pins • Memory bank selecting: Selectable between bank 1 and bank 4 by setting the SEL0 and SEL1 pins (Other than ML22802/ML22P802) Selectable between bank1 and bank 2 (ML22802/ML22P802) • Volume control: Can be adjusted in 16 levels or set to OFF • Repeat function: LOOP command • Source oscillation frequency: 4.096 MHz • Power supply voltage: 2.7 to 3.6 V • Operating temperature range: -20 to +85 °C • Package: 30-pin plastic SSOP (SSOP30-P-56-0.65-K) • Product name: ML22P808MB, ML22P804MB, ML22P802MB ML22808-xxxMB, ML22804-xxxMB, ML22802-xxxMB (xxx indicates a ROM code number) |
Số phần tương tự - ML22802-XXX |
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Mô tả tương tự - ML22802-XXX |
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