PEB3265FV15XT Lantiq, PEB3265FV15XT Datasheet - Page 235

• Manufacturer Part Number: PEB3265FV15XT
• Manufacturer: Lantiq

Specifications of PEB3265FV15XT

• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: Yes
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TQFP
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Operating Supply Voltage (max): 3.465V
• Operating Supply Voltage (min): 3.135V
• Lead Free Status / RoHS Status: Compliant

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