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ICM7101D ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 3 Page - List of Unclassifed Manufacturers

๋ถ€ํ’ˆ๋ช… ICM7101D
์ƒ์„ธ๋‚ด์šฉ  LOW COST SINGLE CHIP TELEPHONE IC
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ICM7101D ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 3 Page - List of Unclassifed Manufacturers

 
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Rev. 2.0
ICmic reserves the right to change the specifications without prior notice
3
PIN DESCRIPTION
Pin No
Symbol
Description
1
AGND
Analog Ground
2
VDD
Supply Voltage
3
VDDI
Supply Input Voltage
Power for the chip is extracted from this pin
4
GND
Ground
5
TXO
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.
6
VL
Line Voltage
7
LLC
Line Loss Compensation
0V = No LLC;
AGND=Low LLC;
VDD=High LLC.
8
FOPT0
Flash Option
FOPT0=0 - 100ms
FOPT0=1 - 600ms
9
MFL0
DTMF Level Option
MFL0=0 - Low DTMF (~ -8/-10dB for ZAC=600ohm)
MFL0=1 - High DTMF (~ -6/-8dB for ZAC=600ohm)
10
HS/DPB
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.
11
OSC1
Oscillator Input
3.58MHz ceramic resonator input.
12
OSC2
Oscillator Output
13
RGD
Ring Detection Input
Input for ring frequency detection.
14
MO
Melody Output
Melody pulse output for tone ringer.
15
16
17
18
C4
C3
C2
C1
Keypad Columns
Keypad column inputs.
19
20
21
22
R4
R3
R2
R1
Keypad Rows
Keypad rows. These pins are also used to determine the operating mode.
23
24
M2
M1
Microphone Inputs
Input for electret microphone.
25
CI
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.
26
RXO
Receive Output
These outputs drive a dynamic earpiece.
27
RXI
Receive Input
Input for received signal.
28
STB
Side Tone Balance Input
Side tone cancellation input.


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