YM2149 - Software-Controlled Sound Generator

Datasheet Summary

Description

DA7 ~DAO This is an 8 bit bidirectional data bus which is used for moving data and addresses between the SSG and CPU.

In the read and write modes, DA7 ~ DAO corresponds to B7 ~ BO of the register array.

Features

5V single power supply.
Easy connection to 8 bit or 16 bit CPU.
Simple connection to external system through 2 sequence 8 bit 1/0 port.
Wide voicing range of 8 octaves.
Smooth attenuation by 5 bit envelope generator.
Built-in 5 bit D/A convertor.
Input of double frequency clock can be handled by built-in clock frequency divider.
TTL compatible level.
Low power consumption (typical 125mW).
40 pin plastic O.

Yamaha

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Datasheet Details

Part number	YM2149
Manufacturer	Yamaha
File Size	2.93 MB
Description	Software-Controlled Sound Generator
Datasheet	YM2149 Datasheet
Additional preview pages of the YM2149 datasheet.

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Full PDF Text Transcription

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YAMAHK i. s I YM2149 Software-Controlled Sound Generator (SSG) •OVERVIEW The SSG (Software-Controlled Sound Generator) is an NMOS-LSI device designed to be capable of music generation. It only requires the microprocessor or microcomputer (CPU) to initialize its register array, thus reducing the load on the CPU. Music generation is carried out by the three sequence square wave generator, noise generator, and envelope generator according to the set parameters. This allows for the generation of music, special effects, warnings, and various other types of sounds.

Published: Jun 24, 2005 |