PEB4266TV12NT Infineon Technologies, PEB4266TV12NT Datasheet - Page 235
PEB4266TV12NT
Manufacturer Part Number
PEB4266TV12NT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PEB4266TV12NT.pdf
(383 pages)
Specifications of PEB4266TV12NT
On-hook Transmission
Yes
Polarity Reversal
Yes
On-chip Ring Relay Driver
Yes
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Pin Count
22
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
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Preliminary
Bit
Bit
DTMF Receiver Notch Filter Center Frequency:
NCF = 32768
0 Hz
The bytes are calculated as follows:
NCF-L = MOD (NCF,256) = NCF & 0x00FF
NCF-H = INT (NCF/256) = NCF >> 8
The echo of the dial tone can activate the double talk detection which means that the
DTMF tone will not be detected. Therefore a notchfilter can be programmed to filter out
the echo of the dialtone, because the frequency of the dialtone is known. The center
frequency and the bandwith of the notch filter can be programmed.
Data Sheet
32
33
H
H
f
NCF
DTMF-NCF-H DTMF Receiver Notch Filter Center
DTMF-NCF-L DTMF Receiver Notch Filter Center
7
7
2000 Hz
cos
æ
è
6
6
2
Frequency High Byte
Frequency Low Byte
f
--------------------- -
NCF
8000
Hz
5
5
SLICOFI-2x Command Structure and Programming
ö
= NCF-L + 256
4
4
235
NCF-H
NCF-L
3
3
NCF-H
2
2
DuSLIC-E/-E2/-P
1
1
2000-07-14
0
0
Y
Y
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