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參數(shù)資料
| 型號(hào)： | SC91710B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | TONE / PULSE SWITCHABLE DIALER WITH HANDFREE FUNCTION |
| 中文描述： | 音頻/脈沖開關(guān)的撥號(hào)器帶免提功能 |
| 文件頁(yè)數(shù)： | 6/18頁(yè) |
| 文件大小： | 297K |
| 代理商： | SC91710B |
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Silan
Semiconductors
SC91710A/B
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2001-11-13
6
( continued )
Pin No.
SC91710
A
SC91710B Pin Name
Description
7
7
XMUTE
*Mute output pins.
*NMOS open drain output structure.
*The output is in “LOW” state during dialing sequence (both Pulse and
Tone
mode) otherwise this pin is “high-impedance”.
*Long (continue) Mute.
*Negative power supply pin.
*Positive power supply pin.
*Hook switch input pin.
*When the handset is in ON-HOOK state, this pin must be pulled “high” in
order
to
disable
the
dialing
operation
consumption.
*When in OFF-HOOK state, the
HKS
pin must be pulled “l(fā)ow” state for
all function operation.
*Pulse output signal pin.
*NMOS open drain output structure.
*The output is “LOW” during pulse dialing and Flash operation, otherwise
this output is “floating”.
*Dual Tone Multi-frequency output pin.
*In TONE mode, when an entry of digit key (include *, # key), this pin will
send out a corresponding DTMF signal.
*The TONE pin provides minimum tone duration and minimum intertone
pause time to support rapid key-in. If key-in time is less than 100ms,
DTMF signal will last for 100ms; otherwise the tone duration will last as
long as the key is pressed.
* Handfree input control pin.
* Toggle input structure, falling edge trigger.
* It is used to enable and disable Handfree function.
* With waveshaped by a built-in Schmit trigger, the bounce of input can be
eliminated by external R, C debounce circuit.
* A built-in pull down resistor is 200k typical.
* Handfree output control pin.
* Inverter output structure (normally ‘low’, active ‘high’).
* When a HFI pin is active, Handfree function will be enabled (HFO=1) or
disable (HFO=0).
* When the Handfree function is enable (HFO=1), after OFF-HOOK action,
it can reset Handfree function and HFO pin return to ‘low’ state.
8
9
8
11
VSS
VDD
10
12
HKS
and
decrease
the
power
11
13
PO
12
14
TONE
9
HFI
10
HFO
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相關(guān)代理商/技術(shù)參數(shù) |
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| SC9200 | 制造商:SILAN 制造商全稱:Silan Microelectronics Joint-stock 功能描述:DTMF GENERATOR WITH MICROPROCESSOR |
| SC9200A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DTMF GENERATORS |
| SC9200AS | 制造商:SILAN 制造商全稱:Silan Microelectronics Joint-stock 功能描述:DTMF GENERATOR WITH MICROPROCESSOR |
| SC9200B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DTMF GENERATORS |
| SC9200BS | 制造商:SILAN 制造商全稱:Silan Microelectronics Joint-stock 功能描述:DTMF GENERATOR WITH MICROPROCESSOR |
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