msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 35

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

¡ Semiconductor
(14) CR17 (Memory data register)
CR17 is the register to store the data used by the default value store command.
(15) CR18 (Setting of tone detection frequency, memory address register 3)
D TONE3 to 0: Valid only when the tone generator is operating (except for the initial mode)
B7, 6, 5, 4 ... Not used
B3, 2, 1, 0 ... Setting of a tone frequency (see Table 7)
CR18
Initial value
B3
CR17
Initial value
0
0
0
0
0
0
0
0
B2
0
0
0
0
1
1
1
1
B1
0
0
1
1
0
0
1
1
B0
0
1
0
1
0
1
0
1
D7/CA7
WA7
B7
—
B7
—
Table 7 Setting of Tone Detector Frequencies
697 Hz + 1209 Hz (1)
770 Hz + 1209 Hz (4)
852 Hz + 1209 Hz (7)
941 Hz + 1209 Hz (*)
697 Hz + 1336 Hz (2)
770 Hz + 1336 Hz (5)
941 Hz + 1336 Hz (0)
852 Hz +1336 Hz (8)
D6/CA6
Frequency
WA6
B6
—
B6
—
D5/CA5
WA5
B5
—
B5
—
D4/CA4
B3
WA4
1
1
1
1
1
1
1
1
B4
B4
—
0
B2
0
0
0
0
1
1
1
1
D TONE3/
D3/CA3
WA3
B3
B1
B3
—
0
0
0
1
1
0
0
1
1
B0
0
1
0
1
0
1
0
1
D TONE2/
D2/CA2
WA2
B2
B2
—
0
697 Hz + 1633 Hz (A)
770 Hz + 1633 Hz (B)
852 Hz + 1633 Hz (C)
941 Hz + 1633 Hz (D)
697 Hz + 1477 Hz (3)
770 Hz + 1477 Hz (6)
852 Hz + 1477 Hz (9)
941 Hz + 1477 Hz (#)
D TONE1/
Frequency
D1/CA1
WA1
B1
B1
—
0
MSM7718-01
D TONE0/
D0/CA0
WA0
B0
35/38
B0
—
0