MSM7732-01 Datasheet, PDF (21/29 Pages) OKI electronic componets – Audio CODEC

OKI Semiconductor
FEDL7732-01-10
MSM7732-01
CR4 (Tone generator operating mode and frequency select)
CR4
Initial Value
B7
DTMF/
Others SEL
0
B6
TONE
SEND
0
B5
SAO/
VFRO
0
B4
B3
B2
B1
B0
TONE4 TONE3 TONE2 TONE1 TONE0
0
0
0
0
0
B7 ^{……………………} DTMF or other tones select; 0/Others, 1/DTMF
B6 ^{……………………} Tone transmit enable (transmit side); 0/Voice signal (transmit), 1/Tone transmit
B5 ^{……………………} Tone output pin select (receive side); 0/VFRO, 1/SAO
B4, B3, B2, B1, B0 ^… Tone frequency setting, refer to Tables 5-1 and 5-2.
(a) B7 = 1 (DTMF tones)
B4 B3 B2 B1 B0
* 0000
* 0001
* 0010
* 0011
* 0100
* 0101
* 0110
* 0111
(b) B7 = 0 (Other tones)
B4 B3 B2 B1 B0
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
Table 5-1
Frequency
B4 B3 B2 B1 B0
697 Hz + 1209 Hz * 1 0 0 0
697 Hz + 1336 Hz * 1 0 0 1
697 Hz + 1477 Hz * 1 0 1 0
697 Hz + 1633 Hz * 1 0 1 1
770 Hz + 1209 Hz * 1 1 0 0
770 Hz + 1336 Hz * 1 1 0 1
770 Hz + 1477 Hz * 1 1 1 0
770 Hz + 1633 Hz * 1 1 1 1
Table 5-2
Frequency
B4 B3 B2 B1 B0
2730 Hz/2500 Hz
8 Hz wamble
10000
2000 Hz/2667 Hz
8 Hz wamble
10001
1000 Hz/1333 Hz
8 Hz wamble
10010
—
10011
—
10100
—
10101
—
10110
—
10111
—
11000
400 Hz
11001
440 Hz
11010
480 Hz
11011
—
11100
667 Hz
11101
800 Hz
11110
1000 Hz
11111
Frequency
852 Hz + 1209 Hz
852 Hz + 1336 Hz
852 Hz + 1477 Hz
852 Hz + 1633 Hz
941 Hz + 1209 Hz
941 Hz + 1336 Hz
941 Hz + 1477 Hz
941 Hz + 1633 Hz
*Undefined
Frequency
1200 Hz
1300 Hz
—
1477 Hz
1633 Hz
2000 Hz
2100 Hz
—
2400 Hz
—
2500 Hz
—
—
2700 Hz
—
3000 Hz
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