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1.2 System Unit 1 Hardware Overview
Satellite M50 Series Maintenance Manual
[CONFIDENTIAL]
1-7
Audio subsystem
• Realtek ALC250D for AC97 codec
− AC 97 2.2 compatible
− Leading mixed-digital technology
− 20-bit stereo digital-to-analog converters
− 18-bit stereo analog-to-digital converters
− Sample rate converters.
− Four analog line-level stereo inputs for LIN_IN, CD, VIDEO, and AUX
− Two analog line-level mono inputs for modem and internal PC beep
− Dual stereo line-level outputs for LINE_OUT and ALT_LINE _OUT
− Dual microphone inputs
− High quality differential CD input
− Extensive power management support
− Meets or exceeds the Microsoft
®
PC 99/2001 Audio & WHQL/QLP 2.0
audio
− Built-in 7-band digital hardware equalizer for optimizing speaker response
− Single chip with high S/N ratio (>100dB)
− Support of S/PDIF digital audio output is fully compliant with AC 97 2.2
specifications
− 3D stereo enhancement
− Supports double sampling rate (96KHz) of DVD audio playback