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參數(shù)資料
| 型號： | 73K321L |
| 廠商： | TDK Corporation |
| 英文描述： | Miniature Switch, High Precision |
| 中文描述： | 國際電話電報諮詢委員會.23，.21單芯片調制解調器 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 140K |
| 代理商： | 73K321L |
73K321L
CCITT V.23, V.21
Single-Chip Modem
11
TONE REGISTER
D7
RXD
OUTPUT
CONTR.
D6
D5
D4
D3
D2
D1
D0
TR
011
TRANSMIT
CALLING
TONE
TRANSMIT
ANSWER
TONE
TRANSMI
T DTMF
DTMF 3
DTMF 2/
V.234W/
FDX
DTMF 1
DTMF 0/
ANS. TONE/
SPECIAL
TONE/ SEL
BIT NO.
NAME
CONDITION
DESCRIPTION
D6
X
D5
X
D4 D0
1
D0 interacts with bits D6, D5, D4, and CR0 as shown.
Transmit DTMF tones.
X
X
X
0
0
Mark of an FSK mode selected in CR0 is to be
detected in D2 of DR.
2100 Hz answer tone will be detected in D2 of DR if
V.21 Originate mode is selected in CR0.
X
X
0
1
1300 Hz calling tone will be detected in D2 of DR if
V.21 or V.23 Answer mode is selected in CR0.
Transmit 2225 Hz answer tone in Answer mode.
D0
DTMF 0/
Answer Tone/
Special Tone/
Detect/Select
X
X
1
1
0
0
0
1
Transmit 2100 Hz answer tone in Answer mode.
CR0
D7 D5 D4 D2
TR
D2
0
0
1
1
1
1
0
0
0
1
2-wire half duplex
D2
DTMF2/
V.23 4W/FDX
4-wire full duplex
Programs 1 of 16 DTMF tone pairs that will be transmitted
when TX DTMF (TR bit D4) and TX enable bit (CR0, bit
D2) are set. Tone encoding is shown below:
KEYBOARD
EQUIVALENT
D3
D2 D1 D0
DTMF CODE
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
D3, D2,
D1, D0
DTMF 3,
2, 1, 0
D3
D2
D1 D0
0
1
0
1
0 0 –
1
1
0
1
0
1
0
941
1336
相關PDF資料 |
PDF描述 |
|---|---|
| 73K322L-IH | CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IP | CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L | CCITT V.23, V.22, V.21 Single-Chip Modem(CCITT V.23, V.22, V.21單片Modem) |
| 73M223 | 1200 Baud FSK Modem |
| 73M223-CL | 1200 Baud FSK Modem |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 73K321L-IH | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.21 Single-Chip Modem |
| 73K321L-IP | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.21 Single-Chip Modem |
| 73K322L | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IH | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IP | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
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