MSM7547 데이터 시트보기 (PDF) - Oki Electric Industry
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MSM7547 Datasheet PDF : 7 Pages
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¡ Semiconductor
MSM7547
PIN DESCRIPTION
Pin No.
1
Name I/O
TAUD
O
2
AN2
I
3
NC
—
4
RCV2
O
5
RCV1
O
6
NC
—
7
RAUD
I
8
GND
—
9
ATT0
10
ATT1
I
11
ATT2
Description
Output pin of transmitting voice.
Input pin of RCV1 signal.
Gain control should be connected by a resistor between AN2 pin RCV2 pin.
No Connection.
Output pin of receiving voice.
Gain control should be connected by a resistor between AN2 and RCV2 pin.
RCV2 signal is opposite to phase to RCV1 signal.
Output pin of receiving voice.
RCV1 signal is opposite phase to RCV2 signal.
No Connection.
Receive voice input.
Ground (0 V).
Volume control.
ATT2
0
0
0
0
1
1
1
1
ATT1
0
0
1
1
0
0
1
1
ATT0
0
1
0
1
0
1
0
1
Loss level (dB)
0 ±0.3
–2 ±0.3
–4 ±0.3
–7 ±0.3
–10 ±0.3
–13 ±0.3
–16 ±0.3
–19 ±0.3
Mute signal input.
12
ATTE
I
H : Mute mode
L : Operating mode
Gain control and frequency responce control.
13
AN3
I
Gain control should be controlled by a resistor between AN3 and AO3.
Please refer to follow Fig. 1.
14
MIC
I
Microphone signal input.
Gain control and frequency responce control.
15
AO3
O
Gain control should be controlled by a resistor between AN3 and AO3.
16
VDD
—
Power supply (+5 V).
3/7
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