YMF721 Datasheet - YAMAHA

YMF721 FM + Wavetable Synthesizer LSI

ISA bus interface : 19 pins Pin name pins I/O Type Size Function ADB7-0 8 I/O TTL 2mA Data bus A2-0 3 I TTL - Address bus /MPUCS 1 I TTL - MPU401 chip select /OPLCS 1 I TTL - FM/Wavetable/Command/Control chip select /IOW 1 I TTL - Write enable /IOR 1 I TTL - Read enable RS.

YMF721 OPL4-ML2 FM + Wavetable Synthesizer LSI ˙ OVERVIEW YMF721 (OPL4-ML2) is a high quality and low cost Wavetable synthesizer LSI. YMF721 (OPL4-ML2) integrates an OPL3 (FM synthesizer), General MIDI processor and 1 Mbyte Wavetable sample ROM into one chip, and complies with General MIDI (GM) system level 1. Thus, it is best suited to multimedia applications, sound cards, MIDI synthesis modules and other sound applications. Since this LSI outputs stereophonic 16 bit digital signal (fs = 44.1 k.

YMF721 Features

* ˔ The Wavetable synthesizer of this LSI is able to generate up to 24 types of sounds simultaneously. ˔ Has an interface that makes this LSI compatible with MPU-401 UART mode. ˔ Has an OPL3 (FM synthesizer) for AdLib/SoundBlaster applications. ˔ Has a 1 Mbyte built-in Wavetable sample ROM. ˔ Complies

YMF721-YAMAHA.pdf