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AD1981BBSTZ Datasheet(PDF) 10 Page - Analog Devices

Part # AD1981BBSTZ
Description  AC 97 SoundMAX Codec
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD1981BBSTZ Datasheet(HTML) 10 Page - Analog Devices

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AD1981B
Rev. C | Page 10 of 32
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NC = NO CONNECT
1
2
3
4
5
6
7
8
9
10
11
12
DVDD1
XTL_IN
XTL_OUT
DVSS1
SDATA_OUT
BIT_CLK
DVSS2
SDATA_IN
DVDD2
SYNC
RESET
NC
LINE_OUT_R
LINE_OUT_L
AVDD4
AVSS4
AFILT4
AFILT3
AFILT2
AFILT1
VREFOUT
VREF
AVSS1
AVDD1
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
AD1981B
TOP VIEW
(Not to Scale)
Figure 9. 48-Lead LQFP Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
Mnemonic
I/O
Description
DIGITAL I/O
2
XTL_IN
I
Crystal Input (24.576 MHz) or External Clock Input.
3
XTL_OUT
O
Crystal Output.
5
SDATA_OUT
I
AC-Link Serial Data Output, AD1981B Data Input Stream.
6
BIT_CLK
O/I
AC-Link Bit Clock Output (12.288 MHz) or Bit Clock Input, if Secondary Mode
Selected.
8
SDATA_IN
O
AC-Link Serial Data Input, AD1981B Data Output Stream.
10
SYNC
I
AC-Link Frame Sync.
11
RESET
I
AC-Link Reset, AD1981B Master Hardware Reset.
48
SPDIF
O
S/PDIF Output.
CHIP SELECTS1
45
ID0
I
Chip Select Input 0 (Active Low). This pin can also be used as the chain input from a
secondary codec.
46
ID1
I
Chip Select Input 1 (Active Low).
JACK SENSE AND EAPD
17
JS0
I
Jack Sense 0 Input.
16
JS1
I
Jack Sense 1 Input.
47
EAPD
O
External Amp Power-Down Control.
ANALOG I/O
13
PHONE_IN
I
Phone Input. Mono input from telephony subsystem speaker phone or handset.
14
AUX_L
I
Auxiliary Input Left Channel.
15
AUX_R
I
Auxiliary Input Right Channel.
18
CD_L
I
CD Audio Left Channel.
19
CD_GND_REF
I
CD Audio Analog Ground Reference for Differential CD Input.
20
CD_ R
I
CD Audio Right Channel.
21
MIC1
I
Microphone 1 Input (Mono) or Left Channel when 2-Channel Mode Selected
(Stereo MIC).



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