Realtek ALC272 datasheet in PDF form, 1.28 MB. The ALC272 is a High Definition Audio codec found on many laptops, providing headphone, speaker and microphone interfaces. The document contains pin assignments, power supply requirements, HD Audio link signals and reference application details. It is useful when diagnosing no sound or a dead codec, letting the technician check the analog and digital supply pins, reset, clock and data lines from the chipset, and trace output pins toward the jack or speaker amplifier.
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