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參數(shù)資料
| 型號： | ICM7101D |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LOW COST SINGLE CHIP TELEPHONE IC |
| 中文描述： | 低成本單個集成電路芯片電話 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 212K |
| 代理商： | ICM7101D |
PIN DESCRIPTION
Rev. 2.0
ICmic reserves the right to change the specifications without prior notice
3
Pin No
1
2
Symbol
AGND
VDD
Description
Analog Ground
Supply Voltage
Supply Input Voltage
Power for the chip is extracted from this pin
Ground
Transmit Output
Transmit output to be connected to external power transistor for the
modulation of line voltage and for shorting the line during make period of pulse
dialing.
Line Voltage
Line Loss Compensation
0V = No LLC;
AGND=Low LLC;
VDD=High LLC.
Flash Option
FOPT0=0 - 100ms
FOPT0=1 - 600ms
DTMF Level Option
MFL0=0 - Low DTMF (~ -8/-10dB for ZAC=600ohm)
MFL0=1 - High DTMF (~ -6/-8dB for ZAC=600ohm)
Hook Switch Input and Dial Pulse Output
When off-hook, this pin is pulled high by the hook switch. During pulse dialing,
this pin is pulled low during break periods.
Oscillator Input
3.58MHz ceramic resonator input.
Oscillator Output
Ring Detection Input
Input for ring frequency detection.
Melody Output
Melody pulse output for tone ringer.
3
VDDI
4
GND
5
TXO
6
VL
7
LLC
8
FOPT0
9
MFL0
10
HS/DPB
11
OSC1
12
OSC2
13
RGD
14
MO
15
16
17
18
19
20
21
22
23
24
C4
C3
C2
C1
R4
R3
R2
R1
M2
M1
Keypad Columns
Keypad column inputs.
Keypad Rows
Keypad rows. These pins are also used to determine the operating mode.
Microphone Inputs
Input for electret microphone.
Complex Impedance and AC Impedance Input
Placing 47Kohm resistor between CI and AGND pins sets the AC impedance
around 600ohm. The higher the resistor the higher the AC impedance. Lower
resistor results in lower AC impedance.
Receive Output
These outputs drive a dynamic earpiece.
Receive Input
Input for received signal.
Side Tone Balance Input
Side tone cancellation input.
25
CI
26
RXO
27
RXI
28
STB
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