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參數(shù)資料
| 型號(hào)： | MSM7577 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Voice Signal Level Control LSI |
| 中文描述： | 語(yǔ)音信號(hào)電平控制大規(guī)模集成電路 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 73K |
| 代理商： | MSM7577 |
MSM7577
Semiconductor
3/8
PIN DESCRIPTION
Pin No.
1
Name
TAUD
I/O
O
Description
Output pin of transmitting voice.
Receive voice input.
Gain control should be connected by a resistor between AN2 pin RCV2 pin.
Power down control.
H : Power down
L : Power on
2
AN2
I
4
RCV2
O
Output pin of receiving voice.
Gain control should be connected by a resistor between AN2 and RCV2 pin.
RCV2 signal is opposite phase to RCV1 signal.
Receive voice input.
RCV1 signal is opposite phase to RCV2 signal.
6
7
8
NC
—
I
—
No Connection.
Receive voice input.
Ground (0 V).
Volume control.
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.
Input pin of Microphone signal.
Gain control and frequency responce control.
Gain control should be controlled by a resistor between AN3 and AO3.
Power supply (+3 V).
13
AN3
I
14
MIC
I
15
AO3
O
16
V
DD
—
3
PD
1
5
RCV1
O
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