Acer Aspire 5755 Aspire 5755, 5755G Service Guide - Page 45

Audio Codec and Amplifier Item Audio Controller Features Amplifier Features Specification Audio codec: Realtek ALC271X-GR  Two stereo DAC support 16/20/24-bit PCM for two independent playback (multiple streaming)  Two stereo ADC supports 16/20/24-bit PCM format for two independent recording  All DACs support independent 44.1k/48k/96k/192kHz sample rate  All ADCs support independent 44.1k/48k/96k/192kHz sample rate  Two independent SPDIF outputs support 16/20/24-bit format and 44.1k/48k/88.2k/96k/192kHz rate  Supports line level mono output  Supports analog PCBEEP input, and features an integrated digital BEEP generator  Support two stereo digital microphone input for microphone array AEC/BF application  Supports legacy analog mixer architecture  Supports two GPIO (General Purpose Input/Output) pins (pin sharing with digital microphone interface)  Supports EAPD (External Amplifier Power Down) control for external amplifier  Supports anti-pop mode when analog power AVDD is on and digital power is off  Supports 1.5V~3.3V scalable I/O for HD Audio link  48-pin LQFP 'Green' package N/A N/A Audio Interface Item Audio Controller Audio onboard or optional Mono or Stereo Resolution Compatibility Sampling rate Internal microphone Internal speaker/quantity Specification Realtek ALC271X-GR On board Stereo Support 16/24bit PCM HD audio Interface Sample rate up to 192Khz resolution VSR (Variable Sampling Rate) Yes Yes/(2W speakers x2) Hardware Specifications and Configurations 1-35