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ML7005 Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers

Part # ML7005
Description  DTMF Transceiver
PDF  26 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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ML7005 Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers

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FEDL7005-01
ML7005
6/25
Symbol
Pin
Type
Description
CPDO
22
OUT
Digital output pin for CPT detector.
When a 400 Hz signal is input to the CPDIP and CPDIM pins,
this pin is "1".
When the DOEN register is "0", this pin is fixed at "0".
GND
23
—
Ground pin.
DTGO
24
OUT
Analog output pin for DTMF signal generator.
The tone amplitude is approximately -9.0 dBm for a low group and
approximately -7.0 dBm for a high group.
The transmit signal level can be changed by using the DTAI and DTAO
pins.
See the figure 11 for adjusting the transmit signal level.
Control the ON/OFF of signal transmission by using MFC of the control
register.
DTAI
25
IN
Inverting input pin for operational amplifier used for adjusting the transmit
output level of the DTMF signal generator.
The non-inverting input of this amplifier is internally connected to SG.
See the figure 11 for adjusting the transmit signal level.
When this amplifier is not used, the DTAO pin should be shorted to the
DTAI pin.
DTAO
26
OUT
Output pin for operational amplifier used for adjusting the transmit output
level of the DTMF signal generator.
FXDO
27
OUT
Digital output pin for FAX signal (FX) detector.
When a 1300 Hz signal is input to the FXDIM, this pin is "1".
When a call progress tone (CPT) is received (CPD0="1"), this pin is forced
to be "0".
When the DOEN register is "0", this pin is fixed at "0".
FXDIM
28
IN
Inverting input pin for input amplifier used for detecting the FAX
signal (FX).
See the figure 9 for adjusting the receive signal level.
When the FX detector is not used, the FXDIM pin should be shorted to the
FXDIO pin.
FXDIO
29
OUT
Output pin for input amplifier used for detecting the FAX signal (FX).
CPDIP
30
IN
Non-inverting input pin for input amplifier used for detecting the CPT.
See the figure 8 for adjusting the receive signal level.
When the CPT detector is not used, see the figure 10.
CPDIM
31
IN
Inverting input pin for input amplifier used for detecting the CPT.
CPDIO
32
OUT
Output pin for input amplifier used for detecting the CPT.



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