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參數(shù)資料
| 型號(hào)： | L3235T |
| 英文描述： | Subscriber Line Interface Circuit |
| 中文描述： | 用戶線接口電路 |
| 文件頁數(shù)： | 13/26頁 |
| 文件大?。?/td> | 457K |
| 代理商： | L3235T |
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FUNCTIONAL DESCRIPTION
DIGITALINTERFACE
The different operating modes of the L3235 are
programmed through a digital interface based on
two input pins:
1)SBY input programs the stand-by or Ac-
tive/Ringingmodes.
2)RNG input programs the ringing ON/OFF acti-
vationcondition for the L3234.
The L3235 digitalinterface has four outputpins :
1)OH provides the on hook/off hook or ring trip
informations (active low).
2)GDK provides the ground key on/off informa-
tion (activelow).
3)PU must be connectedto the enable input pin
of CODEC/FILTER devices like ETC 5054/57
and automatically activates this device when
in active mode off-hook is detected or when
ringing mode is selected.
4)CS output must be connected to the CS en-
able input of the solid state ringing injector
L3234.
In this way the L3234 will be enabled when ring-
ing mode is programmed and will be automat-
ically disabled when the ring trip condition will be
detected reducing the ringing signal disconnec-
tion time after ring trip.
The table 1 here below resumes the different op-
eration modes and the relative logic output sig-
nals.
The two current detection (hook and GND key)
have internal fixed threshold. Externallyit is possi-
ble to program their time costantthrough two R-C
components connected respectively to pin 26
(RTF) and pin 27 (GKF).
L3235FUNCTIONAL DIAGRAM
L3234 - L3235
13/26
相關(guān)PDF資料 |
PDF描述 |
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| L3234 | CAP CER 1.5UF 50V 20% X7R 1812 |
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| L3235 | CAP CER 1.5UF 100V 10% X7R 1812 |
| L34024 | Optoelectronic |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L323C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|280V V(RRM)|15A I(T) |
| L323ED | 制造商:Kingbright Corporation 功能描述:LED Uni-Color Orange 625nm 2-Pin |
| L323F | 制造商:CRYDOM 制造商全稱:Crydom Inc., 功能描述:Power Modules |
| L323GD | 制造商:Kingbright Corporation 功能描述:LED Uni-Color Green 565nm 2-Pin |
| L-323GD | 制造商:Kingbright Corporation 功能描述: |
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