AD1981AJST Analog Devices Inc, AD1981AJST Datasheet - Page 8

• Manufacturer Part Number: AD1981AJST
• Description: IC CODEC STEREO MICPREAMP 48LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1981AJST

• Data Interface: Serial
• Resolution (bits): 16, 20 b
• Number Of Adcs / Dacs: 4 / 2
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 85 / 90
• Voltage - Supply, Analog: 4.65 V ~ 5.25 V
• Voltage - Supply, Digital: 3.15 V ~ 3.45 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD1981A
NOTES
All registers not shown. Bits containing an X are assumed to be reserved.
Odd registers are reserved, not aliased.
Reserved registers should not be written to.
Zeros should be written to bits containing an X.
Reg
00h
02h
04h
06h
0Ch
0Eh
10h
16h
18h
1Ah
1Ch
20h
26h
28h
2Ah
2Ch
32h
3Ah
60h
62h
64h
72h
74h
76h
7Ch
7Eh
12h
For AC ‘97 compatibility, Bit D7 (RM) is only available by setting the MSPLT Bit Register 76h. The MSPLT bit enables separate mute bits for the left and right
channels. If MSPLT is not set, RM bit has no effect.
Name
Reset
Master Volume
Headphones Volume
Mono Volume
Phone Volume
Mic Volume
Line In Volume
CD Volume
AUX Volume
PCM Out Vol
Record Select
Record Gain
General Purpose
Power-Down Ctrl/Stat
Ext’d Audio ID
Ext’d Audio Stat/Ctrl
PCM Front DAC Rate SR15
PCM L/R ADC Rate
(SR0)
SPDIF Control
EQ CTRL
EQ DATA
Mixer ADC, Volume
JACK SENSE
Serial Configuration
Misc Control Bits
Vendor ID1
Vendor ID2
(SR1)
PHM
DACZ
D15
X
MM
HPM
MVM
MCM
LM
CM
AM
OM
X
IM
X
EAPD
ID1
VFORCE X
SR15
V
EQM
CFD15
MXM
X
SLOT
16
F7
T7
D14
SE4
X
X
X
X
X
X
X
X
X
X
X
X
PR6
ID0
SR14
SR14
X
MAD
LBEN
CFD14 CFD13
X
X
REGM REGM
2
X
F6
T6
D13
SE3
X
X
X
X
X
X
X
X
X
X
X
X
PR5
X
X
SR13
SR13
SPSR1 SPSR0 L
X
X
X
1
M
SPLT
F5
T5
D12
SE2
LMV4
LHV4
X
X
X
LLV4
LCV4
LAV4
LOV4
X
X
X
PR4
X
X
SR12
SR12
X
CFD12
X
JS
MT2
REGM
0
X
F4
T4
X
D11
SE1
LMV3
LHV3
X
X
LLV3
LCV3
LAV3
LOV3
X
LIM3
X
PR3
REV1
X
SR11
SR11
X
CFD11 CFD10 CFD9
LMG3
JS
MT1
X
DAM
F3
T3
Indexed Control Registers
D10
SE0
LMV2
LHV2
X
X
X
LLV2
LCV2
LAV2
LOV2
LS2
LIM2
X
PR2
REV0
SPCV
SR10
SR10
CC6
X
LMG2
JS
MT0
X
X
F2
T2
D9
ID9
LMV1
LHV1
X
X
X
LLV1
LCV1
LAV1
LOV1
LS1
LIM1
X
PR1
AMAP X
X
SR9
SR9
CC5
X
LMG1 LMG0 RM
JS1
EQB
X
FMXE X
F1
T1
X
D8
ID8
LMV0
LHV0
X
X
LLV0
LCV0
LAV0
LOV0
LS0
LIM0
X
PR0
X
SR8
SR8
CC4
X
JS0
EQB
CHEN X
F0
T0
CFD8
D7
X
ID7
RM
RM
X
X
RM
RM
RM
RM
X
RM
LPBK X
X
X
X
SR7
SR7
CC3
SYM
CFD7 CFD6 CFD5
JS1
TMR
X
S7
REV7 REV6 REV5
X
D6
ID6
X
X
X
M20
X
X
X
X
X
X
X
X
X
SR6
SR6
CC2
CHS
X
JS0
TMR
X
MAD
PD
S6
D5
ID5
X
X
X
X
X
X
X
X
X
X
X
X
X
DSA1
SPSA1 SPSA0 X
SR5
SR5
CC1
BCA5
X
JS1
MD
X
X
S5
PHV4
D4
ID4
RMV4
RHV4
MV4
MCV4
RLV4
RCV4
RAV4
ROV4
X
X
X
X
DSA0
SR4
SR4
CC0
BCA4
CFD4
X
JS0
MD
INTS
MAD
ST
S4
REV4
PHV3
D3
ID3
RMV3
RHV3
MV2
MCV3
RLV3
RCV3
RAV3
ROV3
X
RIM3
X
REF
X
SR3
SR3
PRE
BCA3
CFD3
RMG3
JS1
ST
X
VREFH VREFD MBG1 MBG0
S3
REV3
PHV2
D2
ID2
RMV2
RHV2
MV2
MCV2
RLV2
RCV2
RAV2
ROV2
RS2
RIM2
X
ANL
SPDIF
SPDIF
SR2
SR2
COPY
BCA2
CFD2
RMG2
JS0
ST
SPAL
S2
REV2
D1
PHV1
ID1
RMV1 RMV0
RHV1
MV1
MCV1 MCV0
RLV1
RCV1
RAV1
ROV1 ROV0
RS1
RIM1
X
DAC
X
X
SR1
SR1
/AUD
BCA1
CFD1
RMG1 RMG0
JS1
INT
SPDZ SPLNK 7001h
S1
REV1
D0
ID0
RHV0
MV0
PHV0
RLV0
RCV0
RAV0
RS0
RIM0
X
ADC
VRA
VRA
SR0
SR0
PRO
BCA0
CFD0
JS0
INT
S0
REV0
Default
0090h
8000h
8000h
8000h
8008h
8008h
8808h
8808h
8808h
8808h
0000h
8000h
0000h
000Xh
X605h
0000h
BB80h
BB80h
2000h
8080h
0000h
8000h
0000h
0000h
4144h
5372h