a

High Definition Audio

SoundMAX Codec

AD1987

Rev. 0

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However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

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©2007 Analog Devices, Inc. All rights reserved.

FEATURES

EIGHT 192 kHz DACs

Four independent stereo DAC pairs

7.1 surround sound or 5.1 stereo out plus independent

headphone

Independent 8, 11.025, 16, 22.05, 32, 44.1,

48, 88.2, 96, 176.4, and 192 kHz sample rates

16, 20, and 24-bit PCM resolution

Selectable stereo mixer on outputs

FOUR 96 kHz ADCs

Two independent stereo ADC pairs

Simultaneous record of up to four channels

Independent 8, 11.025, 16, 22.05, 32, 44.1,

48, 88.2, and 96 kHz sample rates

16, 20, and 24-bit PCM resolution

Support for quad microphone arrays

S/PDIF OUTPUT

Supports 44.1, 48, 88.2, 96, 176.4, and 192 kHz sample rates

16, 20, and 24-bit data; PCM, AC3

Digital PCM gain control

DEDICATED AUXILIARY PINS

Stereo CD/auxiliary I/O port w/GND sense

Mono out pin for internal speakers or telephony

ENHANCED FEATURES

Three 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

Four independent microphone bias pins

Digital and analog PCBeep

C/LFE channel swapping

Two general-purpose digital I/O (GPIO) pins

Advanced power management modes

48-lead, Pb-free LFCSP_VQ package

Figure 1. AD1987 Block Diagram

DAC 2

DAC 3

DAC 0

DAC 1

S/P D IF O U T

DIGIT A L

PCB E E P

MO N O OU T

PO R T H

PO R T G

PO R T A

AD 1 9 8 7

H

D

A

U

D

I

O

I

N

T

E

R

F

A

C

E

PO R T E

PO RT B

PO RT C

AD C 1

ADC0

S/PDIF T x

PO R T D

PO R T F

GPIO