Product Overview
38-Voice Audio Effects DSP and Sound Generator
Condition
Unused new old stock (NOS). Clean package body with straight gull-wing leads. Markings legible: SAM9773. Sold each.
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Product Overview
Dedicated to General MIDI sound generation, the Dream SAM9773 combines a 38-voice wavetable sound generator with an onboard RISC effects processor in a single chip. It incorporates internal synthesis firmware, wavetable sound bank storage, and hardware effects routing for reverb, chorus, and surround audio. Serial TTL MIDI input and multi-format digital audio outputs allow direct integration into sound modules, PC audio sub-boards, and electronic musical instruments.
Key Features
- Up to 38-voice polyphony with simultaneous digital effects processing
- Integrated RISC sound synthesis engine and DSP effects core
- Built-in digital effects including reverb, chorus, 4-band stereo EQ, and spatial surround
- Serial TTL MIDI IN interface
- Digital audio output configurable for I2S or 16-bit Japanese format
- Surface-mount 80-lead Thin Quad Flat Package (TQFP-80)
Applications
- Building or repairing General MIDI sound synthesizer daughterboards and Waveblaster-compatible modules
- Restoring legacy PC sound cards and vintage MIDI sound generators
- Designing custom hardware synthesizers, sound modules, and DIY electronic musical instruments
Frequently Asked Questions
What power supply voltages does the SAM9773 require?
Core logic operates from 2.7 V to 3.3 V, while the I/O interface supports 3.0 V to 5.5 V.
What clock source is required to drive the chip?
An external 9.6 MHz crystal or clock signal drives the internal phase-locked loop (PLL).
What is the pin pitch and package body size?
The SAM9773 is housed in an 80-lead TQFP package with a 0.5 mm lead pitch and a 12 mm by 12 mm square body.
Wavetable synthesis was the sound of turn-of-the-century computing, turning dry MIDI commands into full polyphonic arrangements. Solder it in, feed it a serial stream, and let the vintage patch set sing.
