MSM7718-01 查看數據表（PDF） - Oki Electric Industry

零件编号

产品描述 (功能)

生产厂家

MSM7718-01

Echo Canceler with ADPCM CODEC

Oki Electric Industry 

¡ Semiconductor

MSM7718-01

(14) CR17 (Memory data register)

B7

B6

B5

B4

B3

B2

B1

B0

CR17

D7/CA7 D6/CA6 D5/CA5 D4/CA4 D3/CA3 D2/CA2 D1/CA1 D0/CA0

Initial value

—

—

—

—

—

—

—

—

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)

CR18

Initial value

B7

B6

B5

B4

B3

B2

B1

B0

D TONE3/ D TONE2/ D TONE1/ D TONE0/

WA7

WA6

WA5

WA4

WA3

WA2

WA1

WA0

—

—

—

0

0

0

0

0

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)

Table 7 Setting of Tone Detector Frequencies

B3 B2 B1 B0

0000

0001

0010

0011

0100

0101

0110

0111

Frequency

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)

852 Hz +1336 Hz (8)

941 Hz + 1336 Hz (0)

B3 B2 B1 B0

1000

1001

1010

1011

1100

1101

1110

1111

Frequency

697 Hz + 1477 Hz (3)

770 Hz + 1477 Hz (6)

852 Hz + 1477 Hz (9)

941 Hz + 1477 Hz (#)

697 Hz + 1633 Hz (A)

770 Hz + 1633 Hz (B)

852 Hz + 1633 Hz (C)

941 Hz + 1633 Hz (D)

35/38

Share Link: