YM2413B

The YM2413B is a FM operatortype-LL.This LL-Type FM Operator incorporates a DA Converter and a Quartz Oscillator in addition to a YAMAHA original FM Sound Generator, allowing for a much easier and economical sound generating system assembly than conventional LSIs.Tone data are stored in ROM for software simplicity, making YM2413B possible to execute data alterations involved in tone changes with just one Instruments selection operation. Furthermore, a built-in Tone Data Register with capacity for one tone permits sound effects and original tones generation.Tones applicable to the "CAPTAIN" and TELETEXT are included among built-in tone data.

Features of the YM2413B are:(1)FM sound generator for real sound creation; (2)two selectable modes: 9 simultaneous sounds or 6 melody sounds plus 5 rhythm sounds(different tones can be used together in either case); (3)built-in instruments data (15 melody tones, 5 rhythm tones, "CAPTAIN" and TELETEXT applicable tones); (4)built-in DA converter; (5)built-in quartz oscillator; (6)built-in vibrato oscillator/AM oscillator; (7)TTL compatible input; (8)a single SV power source.

The absolute maximum ratings of the YM2413B can be summarized as:(1)pin voltage:0.3 to 7.0V;(2)storage temperature:-55 to 125;(3)ambient operating temperature:0 to 70.Unlike conventional FM sound generators, this OPLL has a bulti-in Instruments ROM, permitting a substantial simplification of sound generation commands from the processor. First,the desired Instruments code is stored in the Instruments Selection Register. Then, after data has been input at the fixed intervals and timing, the unit starts generating sound. Processor automatic play can be easily performed by writing data appropriate to the music into the Sustain and Volume Registers.These Yamaha Products are designed only for commercial and normal industrial applications, and are not suitable for other uses, such as medical life support equipment,nuclear facilities, critical care equipment or any other application the failure of which could lead to death, personal injury or environmental or property damage. Use of the Products in any such application is at the customer's sole risk and expense.