ADSP-1981BL AD [Analog Devices], ADSP-1981BL Datasheet - Page 11

• Manufacturer Part Number: ADSP-1981BL
• Description: AC 97 SoundMAX Codec
• Manufacturer: AD [Analog Devices]

Pin No.
22
23
24
35
36
37
39
41
FILTER/REFERENCE
27
28
29
30
31
32
POWER AND GROUND
1
4
7
9
25
26
38
40
43
44
34
33
NO CONNECTS
12
42
1
2
These pins can also be used to select an external clock. See Table 44.
These signals are connected to resistors, capacitors, or specific voltages.
SIGNALS
2
Mnemonic
MIC2
LINE_IN_L
LINE_IN_R
LINE_OUT_L
LINE_OUT_R
MONO_OUT
HP_OUT_L
HP_OUT_R
V
V
AFILT1
AFILT2
AFILT3
AFILT4
DV
DV
DV
DV
AV
AV
AV
AV
AV
AV
AV
AV
NC
NC
REF
REFOUT
DD
SS
DD
SS
DD
SS
DD
SS
DD
SS
SS
DD
1
2
3
4
1
2
1
2
3
4
1
2
I/O
I
I
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
O
O
I
I
I
I
I
I
Description
Microphone 2 Input (Mono) or Right Channel when 2-Channel Mode Selected
(Stereo MIC).
Line-In Left Channel.
Line-In Right Channel.
Line-Out (Front) Left Channel.
Line-Out (Front) Right Channel.
Monaural Output to Telephony Subsystem Speaker Phone.
Headphone Left-Channel Output.
Headphone Right-Channel Output.
Voltage Reference Filter.
Voltage Reference Output 5 mA Drive (Intended for MIC Bias and Power Amp Bias).
Antialiasing Filter Capacitor—ADC Right Channel.
Antialiasing Filter Capacitor—ADC Left Channel.
Antialiasing Filter Capacitor—Mixer ADC Right Channel.
Antialiasing Filter Capacitor—Mixer ADC Left Channel.
Digital V
Digital GND.
Digital GND.
Digital V
Analog V
Analog GND.
Analog V
Analog GND.
Analog V
Analog GND.
Analog V
Analog GND.
No Connect.
No Connect.
Rev. A | Page 11 of 32
DD
DD
DD
DD
DD
DD
, 3.3 V.
, 3.3 V.
, 3.3 V.
, 3.3 V.
, 3.3 V.
, 3.3 V.
AD1981BL