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參數資料
| 型號： | L3000NSO |
| 廠商： | 意法半導體 |
| 英文描述： | SLIC KIT OPTIMIZED FOR APPLICATIONS WITH BOTH FIRST AND SECOND GENERATION COMBOS |
| 中文描述： | 用戶接口盒優(yōu)化用于包括第一代和第二代組合技的應用 |
| 文件頁數： | 6/32頁 |
| 文件大?。?/td> | 412K |
| 代理商： | L3000NSO |
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FUNCTIONAL DESCRIPTION
L3000N- HIGHVOLTAGE CIRCUIT
The L3000N line interface provides battery feed
for telephone lines and ringing injection. Both
these operations are done in Balance Mode. This
is very important in order to avoid the generation
of common mode signals in particular during the
pulse dialling operation of the telephone set con-
nected to the SLIC. The IC contains a state de-
coder that under externalcontrol can force the fol-
lowing
operational
conversation and ringing.
In addition Power down mode can be forced con-
necting the bias current resistor to V
DD
or leaving
it open.
Two pins, I
L
and I
T
, carry out the information con-
cerning line status which is detected by sensing
the line current into the output stage.
The L3000N amplifies both the AC and DC signals
enteringat pin6 (VIN) by a factor equalto 40.
Separategrounds are provided:
- Analog ground as reference for analog sig-
nals
- Battery ground as a reference for the output
stages
The two ground should be shorted together at a
low impedancepoint.
modes
:
stand-by,
L3092- LOW VOLTAGE CIRCUIT
The L3092 Low Voltage Control Unit controls the
L3000N line interface module providing set up
data to set line feed characteristics and to inject
ringing. An on chip digital parallel interface allows
a
microprocessor
or
COMBO as the TS5070 to control all the opera-
tions.
L3092 defines working states of Line Interface
Circuit and also informs the card controller about
linestatus.
a
second
generation
L3000NWORKING STATES
In order to carry out the different possible opera-
tions, the L3000N has several different working
states. Each state is defined by the voltage re-
spectively applied by pin 12 and 13 of L3092 to
the pins 12 and 11 of L3000N.
Three different voltage levels (–3, 0, +3) are avail-
able at eachconnection, so defining nine possible
statesas listed in tab. 1.
Appropriate combinations of two pins define four
of the five possible L3000N working states that
are:
a) Stand-by(SBY)
b)Conversation(CVS)
FUNCTIONAL DIAGRAM
L3000N
L3000N - L3092
6/32
相關PDF資料 |
PDF描述 |
|---|---|
| L3000N | Subscriber Line Interface(用戶線路接口設備) |
| L3030 | Subscriber Line Interface(用戶線路接口設備) |
| L3000S | SLIC Kit Optimized for Applications with Both First and Second Generation Combos(用于短波/超短波通信系統(tǒng)的用戶線接口) |
| L30030G-1 | Class G Fuse Blocks |
| L30030G-2 | Class G Fuse Blocks |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L3000S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX-77 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX-VC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
| L3000SX-VM | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
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