AD1888 Datasheet, PDF (1/32 Pages) Analog Devices – AC 97 SoundMAX Codec

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AC ’97 SoundMAX^® Codec
AD1888
FEATURES
AC ’97 2.3 COMPATIBLE FEATURES
6 DAC Channels for 5.1 Surround
90 dB Dynamic Range
20-Bit PCM DACs
S/PDIF Output
Integrated Stereo Headphone Amplifiers
Phone, Aux, and Line-In
High Quality CD Input
Selectable MIC Input
Mono Output
External Amplifier Power-Down Control
Double Rate Audio (f_S = 96 kHz)
Power Management Modes
48-Lead LQFP and 48-Lead LFCSP Packages
ENHANCED FEATURES
Selectable Front and Rear MIC Inputs
with Preamp
Integrated PLL for System Clocking
Crystal-Free Operation
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
FUNCTIONAL BLOCK DIAGRAM
MIC1
MIC2
PHONE_IN
CD_L
CD_R
AUX_L
AUX_R
LINE_IN_L
LINE_IN_R
G
DIFF
AMP
MONO_OUT
M
A
LINE_OUT_L
LINE_OUT_R
MZ
A
MZ
A
CENTER_OUT
LFE_OUT
MZ
A
MZ
A
SURR_L/
HP_OUT_L
SURR_R/
HP_OUT_R
REV. 0
HP M A
HP M A
AD1888
G
M
16-BIT ⌺-⌬
ADC
G
M
16-BIT ⌺-⌬
ADC
ADC
SLOT
LOGIC
PLL
GA
GA
GA
GA
M
M
GA
GA
M
M
GA
M
GA
M
GA
M
M
M
MMMMMM
G = GAIN
A = ATTENUATION
M = MUTE
Z = HIGH-Z
M
GA
M
GA
20-BIT ⌺-⌬
DAC
20-BIT ⌺-⌬
DAC
M
GA
M
GA
20-BIT ⌺-⌬
DAC
20-BIT ⌺-⌬
DAC
M
GA
M
GA
20-BIT ⌺-⌬
DAC
20-BIT ⌺-⌬
DAC
AC '97
CONTROL
REGISTERS
DAC
SLOT
LOGIC
SPDIF
TX
EAPD
JACK
SENSE
LOGIC
VOLTAGE
REFERENCE
XTAL_IN
XTAL_OUT
ID0
ID1
RESET
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
SPDIF_OUT
EAPD
JS0
JS1
V_REF
V_REFOUT
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