AD1887JST 데이터 시트보기 (PDF) - Analog Devices
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AD1887JST Datasheet PDF : 16 Pages
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AD1887
PIN FUNCTION DESCRIPTIONS
Digital I/O
Pin Name
TQFP
I/O
XTL_IN
2
I
XTL_OUT
3
O
SDATA_OUT 5
I
BIT_CLK
6
O/I
SDATA_IN
8
O
SYNC
RESET
10
I
11
I
Description
Crystal (or Clock) Input, 24.576 MHz
Crystal Output
AC-Link Serial Data Output, AD1887 Input Stream
AC-Link Bit Clock 12288 MHz Serial Data Clock Daisy Chain Output Clock
AC-Link Serial Data Input AD1887 Output Stream
AC-Link Frame Sync
AC-Link Reset AD1887 Master H/W Reset
Chip Selects
Pin Name
ID0
ID1
TQFP
45
46
Type
I
I
Description
Chip Select Input 0 (Active Low)
Chip Select Input 1 (Active Low)
Analog I/O
These signals connect the AD1887 component to analog sources and sinks, including microphones and speakers
Pin Name
TQFP
I/O
Description
CD_L
18
I
CD_GND_REF 19
I
CD_ R
20
I
MIC
21
I
LINE_IN_L
23
I
LINE_IN_R
24
I
HP_OUT_L
39
O
HP_OUT_R
41
O
CD Audio Left Channel
CD Audio Analog Ground Reference for Differential CD Input
CD Audio Right Channel
Microphone Input
Line in Left Channel
Line in Right Channel
Headphones Out Left Channel
Headphones Out Right Channel
Filter/Reference
These signals are connected to resistors, capacitors, or specific voltages
Pin Name
TQFP
I/O
Description
VREF
27
O
VREFOUT
28
O
AFILT1
29
O
AFLIT2
30
O
FILT_R
31
O
FILT_L
32
O
Voltage Reference Filter
Voltage Reference Output 5 mA Drive (Intended for Mic Bias)
Antialiasing Filter Capacitor—ADC Right Channel
Antialiasing Filter Capacitor—ADC Left Channel
AC-Coupling Filter Capacitor—ADC Right Channel
AC-Coupling Filter Capacitor—ADC Left Channel
Power and Ground Signals
Pin Name
TQFP
DVDD1
1
DVSS1
4
DVSS2
7
DVDD2
9
AVDD1
25
AVSS1
26
AVDD2
38
AVSS2
40
AVDD3
43
AVSS3
44
Type
I
I
I
I
I
I
I
I
I
I
Description
Digital VDD 33 V
Digital GND
Digital GND
Digital VDD 33 V
Analog VDD 50 V
Analog GND
Analog VDD 50 V
Analog GND
Analog VDD 50 V
Analog GND
REV. 0
–7–
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