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參數(shù)資料
| 型號： | KA8601C |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | SPEAKER PHONE WITH SPEECH NETWORK |
| 中文描述： | 免提電話與語音網(wǎng)絡(luò) |
| 文件頁數(shù)： | 3/10頁 |
| 文件大小： | 280K |
| 代理商： | KA8601C |
KA8601C SPEAKER PHONE WITH SPEECH NETWORK
PIN DESCRIPTION
(continued)
Pin No
Symbol
Description
16
17
18
19
20
21
22
23
RXO+
NC
NC
RXO-
RXI
RXO
SUM
Z
B
MS
R
X
amp non-inverting differential output.
No connection.
No connection.
R
X
amp inverting differential output.
Input to the R
X
amp.
Summed output of the R
X
current amp.
Input to the R
X
current amp.
Mode select input. A logic “1”
→
pulse dialing, A logic “0”
→
tone (DTMF) dialing.
A supply voltage pin for the speaker phone part.
A regulated 3.3 volt output for an external dialer.
Output of the T
X
attenuator.
Input to the T
X
attenuator.
This voltage is a system AC ground, and biases the volume control. A filter cap is required.
An RC at this pin sets the time constant for the T
X
background monitor.
Input to the T
X
level detector on the mike/speaker side.
Output of the T
X
level detector on the mike/speaker side.
Output of the R
X
level detector on the mike/speaker side.
Input to the R
X
level detector on the mike/speaker side.
This pin sets the response time for the circuit to switch modes.
Volumn control input.
Mute input. A logic low (<0.8V) sets normal operation. A logic high (>2.0V) mutes the
mic amp.
Input and summing node of the mic amp.
Output of the mic amp is set by external resistors.
Input to the T
X
level detector on the line side.
Output of the T
X
level detector on the line side.
Output of the R
X
level detector on the line side.
Input to the R
X
level detector on the line side.
A RC at this pin sets the time constant for the R
X
background monitor.
Ground pin for the speaker phone part.
Input to the R
X
attenuator and dial tone detector.
Output of the R
X
attenuator.
Input and summing node of the mic amp.
Output of the first hybrid amplifier.
24
25
26
27
28
29
30
31
32
33
34
35
V
CC
V
DD
TXO
ATT
TXI
ATT
V
B
PD
TX
DETI
TX
2
DETO
TX
2
DETO
RX
2
DETI
RX
2
C
T
V
C
36
MT
37
38
39
40
41
42
43
44
45
46
47
48
MICI
MICO
DET
TX
1
DETO
TX
1
DETO
RX
1
DETI
RX
1
PD
RX
GND
RXI
ATT
RXO
ATT
DTI
DTO -
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