U4091BM-N Datasheet, PDF (10/38 Pages) ATMEL Corporation – PROGRAMMABLE TELEPHONE AUDIO PROCESSOR

Table 7. DTMF and Melody Frequencies
DTMFF
f
Decimal [0:4]
Hz
Tone/
Error
DTMF DTMP
Name
(%)
Freq.
Freq.
Key
0
00000
440.0
a¹
-0.008
697
1209
1
1
00001
466.2
b¹
-0.016
770
1209
4
2
00010
493.9
h¹
-0.003
852
1209
7
3
00011
523.2
c²
0.014
941
1209
*
4
00100
554.4
des²
0.018
697
1336
2
5
00101
587.3
d²
-0.023
770
1336
5
6
00110
622.3
es²
-0.129
852
1336
8
7
00111
659.3
e²
0.106
941
1336
0
8
01000
698.5
f²
-0.216
697
1477
3
9
01001
740.0
ges²
-0.222
770
1477
6
10
01010
784.0
g²
0.126
852
1477
9
11
01011
830.0
as²
-0.169
941
1477
#
12
01100
880.0
a²
0.288
697
1633
A
13
01101
932.3
b²
-0.014
770
1633
B
14
01110
987.8
h²
-0.004
852
1633
C
15
01111 1046.5
c³
-0.335
941
1633
D
16
10000 1108.7
des³
-0.355
697
1209
1
17
10001 1174.7
d³
-0.023
770
1209
4
18
10010 1244.5
es³
-0.129
852
1209
7
19
10011 1318.5
e³
0.106
941
1209
*
20
10100 1396.9
f³
-0.214
697
1336
2
21
10101 1480.0
ges³
-0.222
770
1336
5
22
10110 1568.0
g³
0.126
852
1336
8
23
10111 1661.2
as³
-0.241
941
1336
0
24
11000 1760.0
a³
-0.302
697
1477
3
25
11001 1864.6
b³
-0.014
770
1477
6
26
11010 1975.5
h³
0.665
852
1477
9
27
11011 2093.0
c⁴
0.367
941
1477
#
28
11100 2217.5
des⁴
0.387
697
1633
A
29
11101 2349.3
d⁴
0.771
770
1633
B
30
11110 2663.3
---
852
1633
C
31
11111 2983.0
---
941
1633
D
10 U4091BM-N
4666B–CORD–08/04