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| 型號(hào)： | MSM7547 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Voice Signal Level Control LSI(音頻信號(hào)電平控制LSI) |
| 中文描述： | 語(yǔ)音信號(hào)電平控制大規(guī)模集成電路（音頻信號(hào)電平控制大規(guī)模集成電路） |
| 文件頁(yè)數(shù)： | 3/7頁(yè) |
| 文件大?。?/td> | 70K |
| 代理商： | MSM7547 |
MSM7547
Semiconductor
3/7
PIN DESCRIPTION
Pin No.
1
Name
TAUD
I/O
O
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.
2
AN2
I
3
NC
—
4
RCV2
O
5
RCV1
O
6
7
8
NC
—
I
—
RAUD
GND
9
10
11
ATT0
ATT1
ATT2
I
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
12
ATTE
I
Mute signal input.
H : Mute mode
L : Operating mode
Gain control and frequency responce control.
Gain control should be controlled by a resistor between AN3 and AO3.
Please refer to follow Fig. 1.
Microphone signal input.
Gain control and frequency responce control.
Gain control should be controlled by a resistor between AN3 and AO3.
Power supply (+5 V).
13
AN3
I
14
MIC
I
15
AO3
O
16
V
DD
—
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