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ML2253-XXXHB 데이터시트(PDF) 1 Page - OKI electronic componets |
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1 / 36 page OKI Semiconductor FEDL2250DIGEST-09 Issue Date: Sep. 15, 2005 ML2251/52/53/54/56-XXX, ML22Q54/Q58 2-Channel Mixing Oki ADPCM Algorithm-Based Speech Synthesis LSI This document contains minimum specifications. For full specifications, please contact your nearest Oki office or representative. GENERAL DESCRIPTION The ML2250 family is a 2-channel mixing speech synthesis device with an on-chip voice data (i.e., phrases) storing mask ROM and a flash memory. Besides playing the built-in voice data, this device can output voice data that is input from outside the device. This ML2250 family allows selecting the playback method from the 8-bit PCM, non-linear 8-bit PCM, 16-bit PCM, 2-bit ADPCM2, and 4-bit ADPCM2 algorithms. And the sound volume is adjustable as well. The ML2250 family incorporates a 14-bit D/A converter and low-pass filter. It is easy to configure a speech synthesizer by externally connecting a power amplifier and a CPU to the ML2250 family. The ML2250 family line-up includes 2 types of products: with on-chip mask ROM, and with on-chip flash memory. ML2251/52/53/54/56-XXX This is a CMOS single chip speech synthesis device with an on-chip mask ROM. Products with 5 types of mask ROMs are available in the ML2250 family depending upon the total playback time length. ML22Q54/Q58 The ML22Q54/Q58 is a speech synthesis device with a 4-Mbit flash memory built in. The voice data can be easily written to the flash memory using a special tool. The on-chip flash memory product is suitable for the diversified low volume production or short delivery time applications that the on-chip mask ROM product cannot support. The ML22Q54/Q58 is most suitable for evaluation because the circuit configuration is the same as the on-chip mask ROM product. As it is easy to write to build in-flash memory, it is able to combine fixed message and variable message. 1/36 |
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