msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 35
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msm7718-01
Manufacturer Part Number
msm7718-01
Description
Echo Canceler With Adpcm Codec
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7718-01.pdf
(38 pages)
- Current page: 35 of 38
- Download datasheet (232Kb)
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(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
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