Alc271x Datasheet Jun 2026

The following table summarizes the core electrical and performance characteristics of the ALC271X, based on official service manual documentation:

Realtek ALC271X Datasheet: Comprehensive Guide to Technical Specifications, Pinout, and Application Architecture

The ALC271X is supported by the driver (specifically snd-hda-intel and snd-hda-codec-realtek modules). However, its integration has a colourful history of quirks and workarounds. alc271x datasheet

The datasheet for the ALC271X series, specifically the variant, outlines several critical parameters for hardware integration:

This article was compiled from manufacturer specifications, OEM service manuals, ALSA kernel documentation, and electronic component distributor databases. For the most current information, refer to Realtek's official documentation. The following table summarizes the core electrical and

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Linux kernel developers discovered that the ALC271X that work on other Realtek codecs, leading to codec communication stalls after suspend/resume on some laptops. A patch was introduced to avoid these invalid COEFs, but it was later reverted because it broke headphone output on the Acer TravelMate B113 . For the most current information, refer to Realtek's

Acer service documentation further confirms that the ALC271X supports 16/24-bit PCM HD Audio with variable sampling rate support up to 192 kHz resolution.

The is a high-performance, low-power High Definition Audio (HDA) codec designed primarily for laptops, ultrabooks, and small-form-factor desktop motherboards. As a staple integrated circuit (IC) in embedded multimedia design, understanding the ALC271X datasheet parameters is critical for hardware repair engineers, motherboard developers, and open-source operating system maintainers.

Includes analog inputs (Microphone, Line-in) and outputs (Headphone, Line-out). It supports 4-channel analog output for basic surround sound setups.

A recurring theme in technical forums regarding the ALC271X is its relationship to the . Extensive debugging by the open-source community has revealed that the ALC271X is not a wholly unique design but rather a software-constrained variant of the ALC269 family.