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Chapter 1 27
Audio Interface
Item Specification
Chipset REALTEK ALC889X for High Definition Audio Codec
Package 48-pin LQFP ‘green’ package
Features • High performance DACs with 108dB signal-to-noise ratio
• High performance ADCs with 104dB signal-to-noise ratio
• Meets Microsoft WLP 3.0x and future WLP4.0 Premium requirements
• Ten DAC channels support 16/20/24-bit PCM format for 7.1 sound
playback, plus 2 channels of concurrent independent stereo sound
output (multiple streaming) through the front panel output
• Three stereo ADCs support 16/20/24-bit PCM format, multiple stereo
recording
• All DACs supports 44.1k/48k/88.2k/96k/176.4k/192kHz sample rate
• All ADCs supports 44.1k/48k/88.2k/96k/176.4k/192kHz sample rate
• Primary 16/20/24-bit S/PDIF-OUT supports 32k/44.1k/48k/88.2k/96k/
192kHz sample rate
• Secondary 16/20/24-bit S/PDIF-OUT supports 32k/44.1k/48k/88.2k/
96k/192kHz sample rate
• 16/20/24-bit S/PDIF-OUT supports 32k/44.1k/48k/88.2k/96k/192kHz
sample rate
• All analog jacks (port-A to port-G) are stereo input and output re-tasking
• Port-A/B/C/D/E/F/ built-in headphone amplifiers
• Port-B/C/E/F with software selectable boost gain (+10/+20/+30dB) for
analog microphone input
• High-quality analog differential CD input
• Supports external PCBEEP input and built-in digital BEEP generator
• Software selectable 2.5V/3.2V/4.0V VREFOUT
• Up to four channels of microphone array input are supported for AEC/
BF application
• Two jack detection pins each designed to detect up to 4 jacks plugging
• Supports analog GPIO2 to be jack detection for CD input which is used
as 9th analog port
• Supports legacy analog mixer architecture
• Up to 3 GPIOs for customized applications. GPIO0 and GPIO1 share
pin with DMIC-CLK and DMIC-DATA
• Supports mono and stereo digital microphone interface (pins shared
with GPIO0 and GPIO1)
• Supports anti-pop mode when analog power AVDD is on and digital
power is off
• Content Protection for Full Rate lossless Audio content playback (with
selected versions of WinDVD/PowerDVD)
• Stereo DSD (Direct Stream Digital) playback and recording converters
are integrated
• Zero-Detect output volume control
• 1dB per step output volume and input volume control
• Supports 3.3V digital core power, 1.5V or 3.3V digital I/O power for HD
Audio link and 5.0V analog power