AD1987| Datasheet

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High Definition Audio SoundMAX Codec AD1987
FEATURES
3 stereo headphones Microsoft Vista Premium logo for desktop 95 dB audio outputs, 90 dB audio inputs Internal 32-bit arithmetic for greater accuracy Impedance and presence detection on all jacks Retaskable jacks 4 independent microphone bias pins Digital and analog PCBeep C/LFE channel swapping 2 general-purpose digital I/O (GPIO) pins Advanced power management modes 48-lead LFCSP_VQ package 16-, 20-, and 24-bit PCM resolution Selectable stereo mixer on outputs

FOUR 96 kHz ADCs
2 independent stereo ADC pairs Simultaneous record of up to 4 channels Independent 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz sample rates 16-, 20-, and 24-bit PCM resolution Support for quad microphone arrays

S/PDIF OUTPUT
Supports 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz sample rates 16-, 20-, and 24-bit data; PCM, AC3 Digital PCM gain control

EIGHT 192 kHz DACs
4 independent stereo DAC pairs 7.1 surround sound or 5.1 stereo out plus independent headphone Independent 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz sample rates

DEDICATED AUXILIARY PINS
Stereo CD/auxiliary I/O port w/GND sense Mono out pin for internal speakers or telephony

S /P D IF T x DAC3 DAC2 H D A U D I O I N T E R F A C E DAC1 DAC0

S /P D IF O U T

D IG IT A L P C B E EP

A D 19 87

PO R T F PO R T G PO R T D PORT H MONO OUT PORT E

G P IO

PORT A PORT B PORT C

A DC1 ADC0

Figure 1. AD1987 Block Diagram Rev. A
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