參數(shù)資料
型號: 73K322L-IH
廠商: TDK Corporation
英文描述: CCITT V.23, V.22, V.21 Single-Chip Modem
中文描述: 國際電話電報(bào)諮詢委員會.23,.22,.21單芯片調(diào)制解調(diào)器
文件頁數(shù): 14/30頁
文件大?。?/td> 288K
代理商: 73K322L-IH
73K322L
CCITT V.23, V.22, V.21
Single-Chip Modem
14
TONE REGISTER
(continued)
D7
D6
D5
D4
D3
D2
D1
D0
TR
011
RXD
OUTPUT
CONTR.
TRANSMIT
GUARD/
CALLING
TONE
TRANSMIT
ANSWER
TONE
TRANSMIT
DTMF
DTMF 3
DTMF 2/
V.23 FDX
DTMF 1/
OVER-
SPEED
DTMF 0/
G.T./ANSW./
SP. TONE/
SELECT
BIT NO.
NAME
CONDITION
DESCRIPTION
KEYBOARD
EQUIVALENT
DTMF CODE
D3 D2
D1 D0
TONES
LOW
HIGH
8
1
0
0
0
852
1336
9
1
0
0
1
852
1477
0
1
0
1
0
941
1336
*
1
0
1
1
941
1209
#
1
1
0
0
941
1477
A
1
1
0
1
697
1633
B
1
1
1
0
770
1633
C
1
1
1
1
852
1633
D3, D2,
D1, D0
(cont.)
D
0
0
0
0
941
1633
0
Disable DTMF.
D4
Transmit DTMF
1
Activate DTMF. The selected DTMF tones are
transmitted continuously when this bit is high. TX DTMF
overrides all other transmit functions.
0
Disables answer tone generator.
D5
Transmit Answer
Tone
1
Enables answer tone generator. A 2100 Hz answer tone
will be transmitted continuously when the transmit enable
bit is set. The device must be in Answer mode. To
transmit answer tone, the device must be in DPSK
Answer mode.
0
Disables guard/calling tone generator.
D6
TX Guard or
Calling Tone
1
Transmit guard tone if in V.22 and answering; otherwise
transmit calling tone, in any other mode including V.23
mode.
0
Enables RXD pin. Receive data will be output on RXD.
D7
RXD Output
Control
1
Disables RXD pin. The RXD pin reverts to a high
impedance with internal weak pull-up resistor.
相關(guān)PDF資料
PDF描述
73K322L-IP CCITT V.23, V.22, V.21 Single-Chip Modem
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