a
AD1980
AC ’97 SoundMAX
®
Codec
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. 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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: 781/326-8703 © 2002 Analog Devices, Inc. All rights reserved.
FEATURES
AC ’97 2.3 COMPATIBLE FEATURES
6 DAC Channels for 5.1 Surround
S/PDIF Output
Integrated Stereo Headphone Amplifier
Variable Rate Audio
Double Rate Audio (f
S
= 96 kHz)
Greater than 90 dB Dynamic Range
20-Bit PCM DACs
Line-Level Mono ”Phone” Input
High Quality CD Input
Selectable MIC Input with Preamp
AUX and Line_In Stereo Inputs
External Amplifier Power-Down Control
Power Management Modes
48-Lead LQFP Package
FUNCTIONAL BLOCK DIAGRAM
MC1
MC2
PHONE_IN
CD_L
CD_GND
CD_R
AUX_L
AUX_R
LINE_IN_L
MS
G
G
2CMIC
MIC PREAMP
CD
DIFF AMP
M
GA
M
GA
M
GA
M M M
GA
M
GA
M
GA
M
GA
M
GA
M M
M
M
G = GAIN
A = ATTENUATION
M = MUTE
Z = HIGH Z
MG
16-BIT
H9018-H9004 ADC
MG
16-BIT
H9018-H9004 ADC
PCM L/R
ADC RATE
RECORD
SELECT
OR
V
REF
G
V
REFOUT
LINE_IN_R
CODEC CORE
VOLTAGE
REFERENCE
DAC
SLOT
LOGIC
AC
'
97 INTERF
A
CE
EQ COEF ST
ORA
GE
AC '97
CONTROL
REGISTERS
EAPD
ANALOG MIXING
CONTROL LOGIC
PLL
XTL_OUT XTL_IN SPDIF
SPDIF
TX
ID0
ID1
RESET
SYNC
BITCLK
SDATA_OUT
SDATA_IN
JS0 JS1 EAPD
AD1980
20-BIT
H9018-H9004 DAC
PCM LFE
DAC RATE
M G
SPRD
MZ ALFE_OUT
SPRD
MZ ACENTER_OUT
20-BIT
H9018-H9004 DAC
PCM FRONT
DAC RATE
M G
M G
M G
20-BIT
H9018-H9004 DAC
M G
20-BIT
H9018-H9004 DAC
M G
PCM SURR
DAC RATE
BYP
ASS
EQ
20-BIT
H9018-H9004 DAC
BYP
ASS
EQ
20-BIT
H9018-H9004 DAC
MZ ALINE_OUT_L
MZ AMONO_OUT
MZ
ALINE_OUT_R
M ASURR_OUT_L/
HP_OUT_L
M ASURR_OUT_R/
HP_OUT_R
HP
HP
LOSEL
LOSEL
HPSEL
HPSEL
ENHANCED FEATURES
Integrated Parametric Equalizer
Stereo MIC Preamp Support
Integrated PLL for System Clocking
Variable Sample Rate 7 kHz to 96 kHz
Jack Sense (Auto Topology Switching)
Software Controlled VREF_OUT for MIC Bias
Software Enabled Outputs for Jack Sharing
Auto Down-Mix and Channel Spreading Modes