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參數(shù)資料
| 型號： | 73K302L-IP |
| 廠商： | TDK Corporation |
| 英文描述： | Single-Chip Modem |
| 中文描述： | 單芯片調(diào)制解調(diào)器 |
| 文件頁數(shù)： | 14/29頁 |
| 文件大?。?/td> | 282K |
| 代理商： | 73K302L-IP |
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73K302L
Bell 212A, 103, 202
Single-Chip Modem
14
TONE REGISTER
(continued)
D7
D6
D5
D4
D3
D2
D1
D0
TR
011
RXD
OUTPUT
CONTR.
TRANSMIT
SOFT
CARRIER
TURN-OFF
TONE
TRANSMIT
ANSWER
TONE
TRANSMIT
DTMF
DTMF 3
DTMF 2/
202
FDX
DTMF 1/
OVER-
SPEED
DTMF 0/
SPECIAL
TONE SEL
BIT NO.
NAME
CONDITION
DESCRIPTION
KEYBOARD
EQUIVALENT
DTMF CODE
D3 D2 D1 D0
TONES
LOW
HIGH
*
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 2225 Hz answer tone
will be transmitted continuously when the transmit enable
bit is set. To transmit answer tone, the device must be in
answer mode.
0
Disables SCT tone generator.
D6
Transmit
SCT Tone
1
Transmit SCT tone in Bell 202 mode. To transmit SCT
tone, 202 originate mode must be selected.
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.
Notes for Tone Register use:
1. To detect SCT tone, 202 answer mode must be selected.
2. For answer tone detection, 103 or 212 originate mode must be active. To transmit answer tone, the 73K302L
must be in 103 or 212 answer mode.
3. After completion of DTMF dialing, bit D2 should be reset unless 202 full-duplex mode is selected.
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| 73K321L | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.21 Single-Chip Modem |
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