Datasheet > YMU759

YMU759

更新时间： 2024-01-17 00:30:22

品牌	Logo	应用领域
其他 - ETC		商用集成电路旋律IC 先进先出芯片便携式电话
页数	文件大小	规格书
18页	395K
描述
SYNTHESIS LSI FOR PORTABLE TELEPHONE

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YMU759 数据手册

YMU759

MA-2

Outline

YMU759 is a synthesis LSI for portable telephone that is capable of playing high quality music by utilizing

FMsynthesizer and ADPCM decorder that are included in this device. As a synthesis, YMU759 is equipped

with Yamaha’s original FM synthesizer, with which the device is capable of simultaneously generating up to

16 voices with different tones. Since the device is capable of generating ADPCM data simultaneously

synchronous with the play of the FM synthesizer, various sampled voices can be used as sound effects.

Since the play data of YMU759 are interpreted at anytime through FIFO, the length of the data (playing period)

is not limited, so the device can flexibly support applications such as incoming call melody distribution service.

The hardware sequencer built in this device allows playing of complex music without giving excessive load to

the CPU of the portable telephones. Moreover, the registers of the FM synthesizer can be operated directly for

real time sound generation, allowing, for example, utilization of various sound effects when using the game

software installed in the portable telephone.

YMU759 includes a speaker amplifier with low ripple whose maximum output is 550 mW

(SPVDD=3.6V). The device is also equipped with conventional functions including a vibrator and a circuit for

controlling LEDs synchronous with music.

For the headphone, it is provided with a stereophonic analog output terminal.

For the purpose of enabling YMU759 to demonstrate its full capabilities, Yamaha proposes to use “SMAF:

Synthetic music Mobile Application Format” as a data distribution format that is compatible with multimedia.

Since the SMAF takes a structure that sets importance on the synchronization between sound and images,

various contents can be written into it including incoming call melody with words that can be used for training

karaoke, and commercial channel that combines texts, images and sounds, and others. The hardware sequencer of

YMU759 directly interprets and plays blocks relevant to systhesis (playing music and reproducing ADPCM with FM

synthesizer) that are included in the data distributed in SMAF.

Features

FM synthesizer functions

Tones

FM synthesizer is capable of creating countless tones theoretically.

When synthesizing tones, it is necessary to designate the number of operators to be used for the synthesis.

(Refer to “5-7. FM synthesis section” for explanation of operator.)

Increasing the number of operators allows synthesis of tones that are more intricate and closer to those

generated by natural musical instruments.

YMU759 supports synthesis of tones of two types including 2-operator tones and 4-operator tones.

Because operator's wave shape can be chosen from eight kinds, the quality of sound improves more

remarkably than 2 operator sound of the MA-1 series. (A MA-1 series can choose operator wave shape from

two kinds.)

Number of voices simultaneously generated

YMU759 is equipped with 32 operators.

The number of voices simultaneously generated varies depending on how many 2-operator tones and

4-operator tones are used.

YAMAHA CORPORATION

YMU759 CATALOG

CATALOG No.:LSI-4MU759A2

2001.1

12 3 4 5 6 7...18

中文翻译

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与YMU759相关器件

型号	品牌	获取价格	描述	数据表
YMU759B-Q	ETC	获取价格	Telecommunication IC
YMU759B-QZ	YAMAHA	获取价格	Tone/Music Synthesizer, PQCC32, LEAD FREE, PLASTIC, QFN-32
YMU759-Q	YAMAHA	获取价格	Tone/Music Synthesizer, PQCC32, PLASTIC, QFN-32
YMU762	ETC	获取价格	Mobile Audio 3
YMU762C-QZ	YAMAHA	获取价格	Tone/Music Synthesizer, PQCC32, LEAD FREE, PLASTIC, QFN-32
YMU762-Q	YAMAHA	获取价格	Tone/Music Synthesizer, PQCC32, PLASTIC, QFN-32
YMU762-QZ	YAMAHA	获取价格	Tone/Music Synthesizer, PQCC32, LEAD FREE, PLASTIC, QFN-32
YMU765-QZ	YAMAHA	获取价格	Tone/Music Synthesizer, PQCC32, LEAD FREE, PLASTIC, QFN-32
YMW025	YEONHO	获取价格	2.50mm PITCH CONNECTOR
YMW025-02R	YEONHO	获取价格	2.50mm PITCH CONNECTOR

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