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參數(shù)資料
| 型號： | 73K222BL |
| 英文描述： | Low-Cost, 7ns, Low-Power Voltage Comparators |
| 中文描述： | 低速調制解調器 |
| 文件頁數(shù)： | 13/26頁 |
| 文件大?。?/td> | 238K |
| 代理商： | 73K222BL |
73K222BL
V.22, V.21, Bell 212A, Bell 103
Single-Chip Modem with Integrated Hybrid
13
TONE REGISTER
(continued)
D7
RXD
OUTPUT
CONTR.
D6
D5
D4
D3
D2
D1
D0
TR
011
TRANSMIT
GUARD
TONE
TRANSMIT
ANSWER
TONE
TRANSMIT
DTMF
DTMF 3
DTMF 2
DTMF 1/
OVER-
SPEED
DTMF 0/
ANSWER/
GUARD
BIT NO.
NAME
CONDITION
DESCRIPTION
Programs 1 of 16 DTMF tone pairs that will be
transmitted when TX DTMF (TONE, Bit D4) and TX
ENABLE bit (CR0, Bit D1) are set. Tone encoding is
shown below:
KEYBOARD
EQUIVALENT
DTMF CODE
D3 D2 D1 D0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
0
0
TONES
LOW
HIGH
1
2
3
4
5
6
7
8
9
0
*
#
A
B
C
D
697
697
697
770
770
770
852
852
852
941
941
941
697
770
852
941
1209
1336
1477
1209
1336
1477
1209
1336
1477
1336
1209
1477
1633
1633
1633
1633
D3, D2,
D1, D0
DTMF 3, 2, 1, 0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
D4
Transmit DTMF
0
Disable DTMF.
1
Activates DTMF. The selected DTMF tones are
transmitted continuously when this bit is high and TX
ENABLE (CR0, Bit 1) is set to one. TX DTMF
overrides all other transmit functions.
D5 interacts with bits D4 and D0 as shown.
Disables answer tone generator.
Enables answer tone generator. A 2225 Hz answer
tone will be transmitted continuously when the
TRANSMIT ENABLE bit is set in CR0. The device
must be in answer mode.
D5
0
1
D4
0
0
D0
X
0
D5
Transmit
Answer Tone
1
0
1
Likewise a 2100 Hz answer tone will be transmitted.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 73K222BL-IGT | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid |
| 73K222BL-IH | 制造商:TDK 功能描述:73K222BL-IH |
| 73K222BL-IH/F | 功能描述:電信集成電路 Modem Data Pump With Hybrid Relay Driver RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| 73K222BL-IHR/F | 功能描述:電信集成電路 Modem Data Pump With Hybrid Relay Driver RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| 73K222L-IH | 制造商:SSI 功能描述: |
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