4.3
Audio Output
Interface
Fig. 16
Fig. 16 illustrates the audio output connections to a commercially
available LM386 audio amplifier. It shows channels A, B, and C
summed together to enable complex waveforms to becomposed and
amplified through a single external amplifier. These channels may be
individually amplified through separate channels for more exotic
sound systems.
Each output channel is individually controlled by separateamplitude
registers (R10, R11, R12) and an enable register (R7) in the PSG.
AUDIO OUTPUT INTERFACE
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