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Texas Instruments SN76489

Pinout of the standard Texas Instruments SN76489 chip. The packaging is a standard 16-pin DIP.

The SN76489[1] Digital Complex Sound Generator (DCSG) is a TTL-compatible programmable sound generator chip from Texas Instruments.[2] Its main application was the generation of music and sound effects in game consoles, arcade video games, and home computers (TI-99/4A, BBC Micro, ColecoVision, IBM PCjr, Tomy Tutor, Master System, Game Gear, Tandy 1000), competing with the similar General Instrument AY-3-8910.

It contains:[1]

  • 3 square wave tone generators
    • A wide range of frequencies
    • 16 different volume levels
  • 1 noise generator
    • 2 types (white noise and periodic)
    • 3 different frequencies
    • 16 different volume levels
  1. ^ a b Engineering staff of Texas Instruments Semiconductor Group. "SN 76489 AN" (PDF).
  2. ^ SN76489AN - Manual (PDF). Texas Instruments.
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