Alc271x Datasheet File

Understanding the ALC271X: High Definition Audio Codec Overview

• Operating voltage: 3.3 V
• Power consumption: 300 mW (typical)

Recommendation: Use the datasheet together with: alc271x datasheet

Why does this matter? When reviewing the pinout in the datasheet, the function of certain pins (specifically EAPD, GPIOs, and SDATA_OUT) changes depending on which mode the BIOS configures. Many failed repairs occur because a technician assumes a pin function based on standard HD Audio behavior, ignoring the AC’97 fallback defined in the alc271x datasheet. Operating voltage: 3

Important: The datasheet explicitly notes that the ALC271X does not support "Power State Mapping" for all inputs simultaneously. You cannot use Line-in and Mic-in at the same time in hardware. Recommendation : Use the datasheet together with: Why