msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 28

• Manufacturer Part Number: msm7718-01
• Description: Echo Canceler With Adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
(6) CR5 (Setting of tone generator operating mode and tone frequency)
B7 ... Selection of DTMF signal or others (S, F, or R tone)
B6 ... Transmission of transmit side tone
B5 ... Transmission of receive side tone
B4, 3, 2, 1, 0 ... Setting of a tone frequency (see Table 6)
(a) when B7 = “1” (DTMF tone)
(b) When B7 = “0” (Others)
The Table below lists default frequencies. “00000” to “00011” (“B4, B3, B2, B1, B0”) are tones,
which are modulated by sinewave. “01000” to “01011” are wamble tones, and “10000” to “10111”
are single tones. For procedures to change frequencies, see the next page.
B4 B3 B2 B1 B0
B4 B3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
*
*
*
*
*
*
*
*
CR5
Initial value
0: Others 1: DTMF signal
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
B2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B1 B0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
DTMF/OTHERS
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
SEL
B7
Table 6 Setting of Tone Generator Frequencies
0
3000/0H – 16 Hz Sine wave modulation
400/0H – 16 Hz Sine wave modulation
2700/0H – 16 Hz Sine wave modulation
2000/2667 Hz 8 Hz Wamble
*/*H – 16 Hz Sine wave modulation
513/636 Hz 12 Hz Wamble
800/1000 Hz 8 Hz Wamble
697 Hz + 1209 Hz (1)
697 Hz + 1336 Hz (2)
697 Hz + 1477 Hz (3)
697 Hz + 1633 Hz (A)
770 Hz + 1209 Hz (4)
770 Hz + 1336 Hz (5)
770 Hz + 1477 Hz (6)
770 Hz + 1633 Hz (B)
*/*Hz *Hz Wamble
TX TONE
Description
Description
SEND
B6
0
—
—
—
—
—
—
—
—
RX TONE
SEND
B5
0
0: Not transmit 1: Transmit
0: Not transmit 1: Transmit
B4 B3 B2 B1 B0
B4 B3
TONE4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
*
*
*
*
*
*
*
*
B4
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
B2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
TONE3
B3
0
B1 B0
0
0
1
1
0
0
1
1
0
0
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
TONE2
B2
0
852 Hz + 1633 Hz (C)
941 Hz + 1633 Hz (D)
852 Hz + 1209 Hz (7)
852 Hz + 1336 Hz (8)
852 Hz + 1477 Hz (9)
941 Hz + 1209 Hz (*)
941 Hz + 1336 Hz (0)
941 Hz + 1477 Hz (#)
1000 Hz Single tone
2000 Hz Single tone
2667 Hz Single tone
1300 Hz Single tone
2080 Hz Single tone
400 Hz Single tone
*Hz Single tone
*Hz Single tone
Description
Description
TONE1
B1
0
MSM7718-01
—
—
—
—
—
—
—
—
TONE0
28/38
B0
0