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參數(shù)資料
| 型號： | YMU762 |
| 元件分類： | 音頻合成 |
| 英文描述： | TONE/MUSIC SYNTHESIZER, PQCC32 |
| 封裝： | PLASTIC, QFN-32 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 165K |
| 代理商： | YMU762 |
YMU762
MA-3
Mobile Audio 3
YAMAHA CORPORATION
PRELIMINARY
May 9 .2001
YMU762 CATALOG
CATALOG No.:LSI-4MU762A0
2001.5
Outline
MA-3 is a synthesizer LSI for mobile phones that realize advanced game sounds.
This LSI has a built-in speaker amplifier, and thus, is an ideal device for outputting sounds that are used by mobile
phones in addition to game sounds and ringing melodies that are replayed by a synthesizer.
The synthesizer section adopts “stereophonic hybrid synthesizer system” that are given advantages of both FM
synthesizers and Waveform table synthesizers to allow simultaneous generation of up to thirty two FM tones and eight
Waveform table tones.
Since FM synthesizer is able to present countless tones by specifying parameters with only several tens of bytes,memory
capacity and communication band can be saved, and thus, the device exhibits the features in operating environment of
mobile phones such as allowing distribution of arbitrary melodies with tones.
On the other hand, since Waveform table synthesizer complies with downloading of tones from host CPU,arbitrary
ADPCM/PCM tones can be treated from a sequencer in addition to the use of tones that are built-in the LSI.
MA-3 has a built-in hardware sequencer that helps to realize complex play without heavily loading the host CPU.
The device also has a built-in circuit for controlling vibrators and LEDs synchronizing with play of music.
Features
MA-3 has features as described below.
Simultaneous generation of up to 40 tones: FM + Waveform table stereophonic hybrid synthesizer.
Polyphonic synthesizer specification..
Has built-in default tones for FM and Waveform table synthesizers in the ROM, and the tones can be downloaded to
RAM.
Fundamental waveforms for FM and algorithm are improved, and tone parameters are added.
Stream replay with ADPCM / PCM (shared use of Waveform table section).
Software interrupt mechanism for external synchronization.
Equipped with 8 bit parallel I/F for control from CPU.
Equipped with speaker amplifier and equalizer circuit.
Equipped with vibration control circuit, and LED lighting control circuit.
Has built-in PLL to support inputting of master clock up to 20 MHz.
Contains a 16-bit stereophonic D/A converter.
Equipped with a stereophonic output terminal for headphone.
Supports power down mode.
Digital power supply: 2.7V to 3.3V (Typ 3.0V)
Analog power supply: 2.7V to 4.5V (Typ 3.6V)
32-pin QFN plastic package
The contents of this booklet are target specifications and they are subject to change without
a prior notice. Please check the finalized specifications before actually using this LSI.
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