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AD1981AJST データシート(PDF) 7 Page - Analog Devices

部品番号 AD1981AJST
部品情報  AC ??7 SoundMAX Codec
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD1981AJST データシート(HTML) 7 Page - Analog Devices

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AD1981A
–7–
PIN FUNCTION DESCRIPTIONS
Pin No.
Mnemonic
I/O
Function
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, AD1981A 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, AD1981A Data Output Stream
10
SYNC
I
AC-Link Frame Sync
11
RESET
I
AC-Link Reset, AD1981A Master H/W Reset
48
SPDIF
O
S/PDIF Output
CHIP SELECTS (These pins can also be used to select an external clock. See Table II.)
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
MIC_IN
I
Microphone Input (Mono)
23
LINE_IN_L
I
Line In Left Channel
24
LINE_IN_R
I
Line In Right Channel
35
LINE_OUT_L
O
Line Out (Front) Left Channel
36
LINE_OUT_R
O
Line Out (Front) Right Channel
37
MONO_OUT
O
Monaural Output to Telephony Subsystem Speakerphone
39
HP_OUT_L
O
Headphone Left Channel Output
41
HP_OUT_R
O
Headphone Right Channel Output
FILTER/REFERENCE (These signals are connected to resistors, capacitors, or specific voltages.)
27
VREF
O
Voltage Reference Filter
28
VREFOUT
O
Voltage Reference Output 5 mA Drive (Intended for Mic Bias
and Power Amp Bias)
29
AFILT1
O
Antialiasing Filter Capacitor—ADC Right Channel
30
AFILT2
O
Antialiasing Filter Capacitor—ADC Left Channel
31
AFILT3
O
Antialiasing Filter Capacitor—Mixer ADC Right Channel
32
AFILT4
O
Antialiasing Filter Capacitor—Mixer ADC Left Channel
POWER AND GROUND SIGNALS
1DVDD1
I
Digital VDD 3.3 V
4DVSS1
I
Digital GND
7DVSS2
I
Digital GND
9DVDD2
I
Digital VDD 3.3 V
25
AVDD1
I
Analog VDD 5.0 V
26
AVSS1
I
Analog GND
33
AVSS4
I
Analog GND
34
AVDD4
I
Analog VDD 5.0 V
38
AVDD2
I
Analog VDD 5.0 V
40
AVSS2
I
Analog GND
43
AVDD3
I
Analog VDD 5.0 V
44
AVSS3
I
Analog GND
NO CONNECTS
12
NC
No Connect
22
NC
No Connect
42
NC
No Connect


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