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YMU757B

MA-1C

Outline

The YMU75B is a high quality melody LSI for cellular phone handsets, supporting the data format for various

applications including ringing and holding melody sounds. The built-in Yamaha's original FM synthesizer can create

various timbres, and its built-in sequencer can produce up to 4 different sounds with 4 different timbres simultaneously

without placing a load to the controller.

The serial port controller interface enables real time reproduction of the melody data via FIFO, without the limitation of

the data capacity.

With a built-in amplifier to drive the dynamic type speaker, it is possible to connect the speaker directly.

This LSI also has an analog-output terminal for the phone jack. In the stand-by mode, the power consumption

can be reduced to 1

碌

A or less while waiting.

Features

YAMAHA's original FM sound generator function

Built-in sequencer

Capable of producing up to 4 different sounds simultaneously (4 independent timbres available).

Built-in output 400mW speaker amplifier

Built-in circuit for sound quality correcting equalizer

Built-in serial interface

2.688, 8.4, 12.6, 14.4, 19.2, 19.68, 19.8 and 27.82 MHz serial clock inputs support

And support the mode which set to optional frequency from 2.685MHz to 27.853MHz at 55.93kHz intervals

Analog output for ear phone

Power down mode (Typ 1碌A or less)

Power supply voltage (Digital and Analog): 3.0V鹵10 %

20-pin QFN

YAMAHA CORPORATION

YMU757B CATALOG

CATALOG No.:LSI-4MU757B2

2000.4

YMU757B Datasheet