FEDL2216DIGEST-03
OKI Semiconductor
Issue Date: Nov. 15, 2007
ML2216-XXX/ML22P16
Oki ADPCM2 Algorithm-Based Speech Synthesis LSI
GENERAL DESCRIPTION
The ML2216-XXX is speech synthesis device with a 8Mbit P2ROM built-in.
The ML2216-XXX incorporates ADPCM2 decoder, 12-bit D/A converter, and low-pass filter. Moreover, the
monophonic speaker amplifier for driving a direct speaker is built in.
The ML2216-XXX carried out all functions required for a voice response circuit to one chip. For this reason,
inclusion to small and pocket equipment became still easier.
ML2216-xxx serves as write-in shipment.
ML22P16 is speech synthesis device with 8M bit OTP memory built-in. User is able to program a device one time
by using exclusive tool.
FEATURES
• Built-in memory capacity and the Maximum playback time length (please refer to the following table)
Type
ROM capacity
ML2216/ML22P16
8 Mbit
Maximum playback time length (sec) (In 4-bit ADPCM2)
FSAM = 4.0 kHz
FSAM = 8.0 kHz
FSAM = 16 kHz
524
262
131
• Non-linear 8-bit PCM, 8-bit PCM, 16-bit PCM, and 4-bit ADPCM2 algorithms
• Sampling frequency:
4.0 kHz, 5.3 kHz, 6.4 kHz, 8.0 kHz, 10.7 kHz, 12.8 kHz, 16.0 kHz
• 12-bit D/A converter built in
• Built-in low-pass filter:
Digital filter
• Amplifier built-in for a speaker drive: 0.3W 8Ω(At VDD=5.0V)
• CPU interface:
3 line type serial clock synchronization
• Maximum number of phrases:
256 phrases
• Volume control function:
VOLUME command (16 step / OFF)
• Repeat function:
LOOP command
• Master clock frequency:
4.096 MHz
• Power supply voltage:
2.7V to 3.6V or 4.5V to 5.5V
• Operating temperature:
-20°C to +85°C
• Package:
44-pin plastic QFP (QFP44-P-910-0.80-2K)
(ML2216-XXXGA, ML22P16GA)
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