S-DSP (Audio Mixer)

Nintendo

1989 (Copyright)
Probably manufactured in 1992

Microchip

1.9mm x 1.2mm

Zachary Caldwell

230A02E

Functions simutaniously with the S-SMP as a sound processor and "is capable of producing and mixing 8 simultaneous voices at any relevant pitch and volume in 16-bit stereo at a sample rate of 32 kHz."

Sony

Sony

Japan

Inazawa

Sony Inazawa Plant (Probably)

Silicon and aluminum

https://en.wikipedia.org/wiki/Nintendo_S-SMP#DSP Because this component works simultaneously with the S-SMP chip, they reside on the same Wikipedia page. As for the plant where it was created, I am making the same inference as the S-SMP chip where the only plant I could find that Sony uses to make microchips; I could not find anything saying that there was a different plant used in the late 1980's and early 1990's. As for the manufacturing date, I assume it's 1992 because that is when most of the date codes on other parts are listed.