OKI Semiconductor
ML2240
4-Channel Mixing Oki ADPCM Algorithm-Based Speech Synthesis LSI
FEDL2240DIGEST-02
Issue Date: July 12, 2004
This document contains minimum specifications. For full specifications, please contact your nearest Oki office or
representative.
GENERAL DESCRIPTION
The ML2240 is a 4-channel mixing speech synthesis device which connects an external ROM expanded up to
128-Mbit (maximum). This ML2240 allows to select 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 ML2240 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 ML2240.
FEATURES
•
Non-linear 8-bit PCM, 8-bit PCM, 16-bit PCM, 2-bit ADPCM2, and 4-bit ADPCM2 algorithms
•
Serial input/parallel input selectable
•
Phrase control table function i.e., user definable phrase control table function
•
4 channels mixing function
•
Master clock frequency:
4.096 MHz
•
Sampling frequency:
4.0 kHz, 5.3 kHz, 6.4 kHz, 8.0 kHz, 10.6 kHz, 12.8 kHz,
16.0 kHz, 21.3 kHz, 25.6 kHz, 32.0 kHz, 42.7 kHz, 48 kHz
•
Maximum number of phrases:
256 phrases
•
Sound volume adjustment function built in (4 sounds independently adjustable in 29 steps)
•
External voice data can be input
•
14-bit D/A converter built in
•
Built-in low-pass filter:
Digital filter
•
Package:
80-pin plastic TQFP (TQFP80-P-1212-0.50-K) (ML2240TB)
1/24
OKI [ OKI ELECTRONIC COMPONETS ]
