psb21381 Infineon Technologies Corporation, psb21381 Datasheet - Page 143
psb21381
Manufacturer Part Number
psb21381
Description
Siemens Codec With S/t Transceiver
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PSB21381.pdf
(270 pages)
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Table 21 DTMF-frequency (F3,FD) Programming
ITU-T Q.23 SCOUT
Low Group
High Group
1209
1336
1477
1633
Note: The deviations due to the inaccuracy of the incoming clock DCL/MCLK, when
Data Sheet
697
770
852
941
[Hz]
added to the nominal deviations tabulated above give the total absolute deviation
from the CCITT-recommended frequencies
Nominal [Hz]
1209.5
1336.9
1477.7
1632.8
697.1
770.3
852.2
941.4
from ITU-T
Relative Deviation
+ 143 ppm
+ 390 ppm
+ 235 ppm
+ 425 ppm
+ 414 ppm
+ 674 ppm
+ 474 ppm
– 122 ppm
133
high [HEX]
4F
A6
45
20
B4
C8
49
40
Coefficients
PSB 21381/2
PSB 21383/4
low [HEX]
16
18
1B
1E
26
2A
2F
34
2001-03-12
Codec
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