參數(shù)資料
型號: 73K224L-IP
廠商: TDK Corporation
英文描述: V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
中文描述: V.22bis/V.22/V.21 /貝爾212A/Bell 103單芯片調(diào)制解調(diào)器
文件頁數(shù): 13/32頁
文件大?。?/td> 206K
代理商: 73K224L-IP
73K224L
V.22bis/V.22/V.21/Bell 212A/Bell 103
Single-Chip Modem
13
TONE REGISTER
(continued)
D7
D6
D5
D4
D3
D2
D1
D0
TR
011
RXD
OUTPUT
CONTR.
TRANSMIT
GUARD
TONE
TRANSMIT
ANSWER
TONE
TRANSMIT
DTMF
DTMF 3
DTMF 2/4
WIRE FDX
DTMF 1/
EXTENDED
OVER- SPEED
DTMF 0/
ANSWER
GUARD
BIT NO.
NAME
CONDITION
D4 = 1
DESCRIPTION
Programs 1 of 16 DTMF tone pairs that will be transmitted
when TX DTMF and TX enable bit (CR0, bit D1) is set.
Tone encoding is shown below:
KEYBOARD
EQUIVALENT
DTMF CODE
D3
D2
D1 D0
TONES
LOW
HIGH
1
2
0
0
0
0
0
1
1
0
697
697
1209
1336
3
0
0
1
1
697
1477
4
5
0
0
1
1
0
0
0
1
770
770
1209
1336
6
0
1
1
0
770
1477
7
8
0
1
1
0
1
0
1
0
852
852
1209
1336
9
1
0
0
1
852
1477
0
*
1
1
0
0
1
1
0
1
941
941
1336
1209
#
1
1
0
0
941
1477
A
B
1
1
1
1
0
1
1
0
697
770
1633
1633
C
1
1
1
1
852
1633
D3, D2,
D1, D0
DTMF 3,
2, 1, 0
D
0
0
0
0
941
1633
0
Disable DTMF.
D4
TX DTMF
(Transmit
DTMF)
1
Activate DTMF. The selected DTMF tones are transmitted
continuously when this bit is high. TX DTMF overrides all
other transmit functions.
Note: DTMF0 - DTMF2 should be set to an appropriate state after DTMF dialing to avoid unintended operation.
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