Hokhma - Review of YM 2149F microcircuits.

                                         
                                          
                                             
                                           



Review of μs YM 2149F.

SSG (Software controlled Sound Genera-
tor) is a large integral micro-
circuit made using NMOS technology
and designed to generate sounds.

Characteristics:

> One supply voltage 5 volts
> Easy pairing with 8 and 16 bit
processors
> Wide range of voices of eight approx.
tav
> Smooth attenuation on 5-bit oscillator
envelope torus
> Built-in 5-bit digital-to-analog
converter
> Double the frequency applied to the clock
input, can be shared built-in
divisor
> TTL compatible signal levels
> Low consumption (125 MW)
> Leg compatible with AY-3-8910
manufactured by General Instruments

DAC

The device's DAC has a logarithmic 
scale 0-1V, i.e. actually regulates
sound volume, which provides shi-
Large dynamic range of output
signal.

To be continued.