ML7041 查看數據表（PDF） - Oki Electric Industry
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ML7041 Datasheet PDF : 28 Pages
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OKI Semiconductor
FEDL7041-04
ML7041
CR4 (Tone generator operating mode and frequency select)
CR4
Initial Value
B7
DTMF/
Others SEL
0
B6
TONE
SEND
0
B5
B4
B3
B2
B1
B0
—
TONE4 TONE3 TONE2 TONE1 TONE0
0
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........................... Not used. When writing data, write “0”.
B4, B3, B2, B1, B0.. Tone frequency setting (refer to Tables 5-1 and 5-2)
(a) B7 = 1 (DTMF tone)
Table 5-1 Tone Generator Frequency Settings
B4 B3 B2 B1 B0
Frequency
B4 B3 B2 B1 B0
* 0 0 0 0 697 Hz + 1209 Hz * 1 0 0 0
* 0 0 0 1 697 Hz + 1336 Hz * 1 0 0 1
* 0 0 1 0 697 Hz + 1477 Hz * 1 0 1 0
* 0 0 1 1 697 Hz + 1633 Hz * 1 0 1 1
* 0 1 0 0 770 Hz + 1209 Hz * 1 0 0 0
* 0 1 0 1 770 Hz + 1336 Hz * 1 1 0 1
* 0 1 1 0 770 Hz + 1477 Hz * 1 1 1 0
* 0 1 1 1 770 Hz + 1633 Hz * 1 1 1 1
*Undefined
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
(b) B7 = 0 (Other tones)
Table 5-2 Tone Generator Frequency Settings
B4 B3 B2 B1 B0
Frequency
B4 B3 B2 B1 B0
00000
2730 Hz/2500 Hz
8 Hz wamb.
10000
00001
2000 Hz/2667 Hz
8 Hz wamb.
10001
00010
1000 Hz/1333 Hz
8 Hz wamb.
10010
00011
10011
00100
10100
00101
10101
00110
10110
00111
10111
01000
11000
01001
400 Hz
11001
01010
440 Hz
11010
01011
480 Hz
11011
01100
11100
01101
667 Hz
11101
01110
800 Hz
11110
01111
1000 Hz
11111
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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