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參數(shù)資料
| 型號(hào)： | L3000S |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 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) |
| 中文描述： | 用戶接口工具包優(yōu)化與包括第一代和第二代功放音箱（用于短波/超短波通信系統(tǒng)的用戶線接口應(yīng)用） |
| 文件頁(yè)數(shù)： | 12/32頁(yè) |
| 文件大?。?/td> | 298K |
| 代理商： | L3000S |
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6) RINGINGMODE
When the ringing function is selected by the con-
trol processor a low level signal (1.5Vrms) with a
frequency in the range from 16 to 70Hz, perma-
nently applied to the L3092 (pin RGIN), is ampli-
fied and injected in balanced mode into the line
through the L3000S with a super imposed DC
voltage of 24Vtyp.
This low level sinewave can be obtained also
from COMBO connecting RGIN pin to
COMBO outputwith a decouplingcapacitor.
The first and the last ringing cycles are synchro-
nized by the L3092 so that the ringing signal al-
ways starts and stops when the line voltage
crosseszero.
When this mode is activated, the L3000S oper-
ates between the negative and the positive bat-
tery voltages typically - 48V and + 72V. The im-
pedance to the line is just equal to the two
external resistors (typ.100
).
Ring trip detection is performed autonomously by
the SLIC, without waiting for a command from the
control processor, using a patented system which
allows detection during a ringing burst ; when the
off-hook condition is detected, the SLIC stops the
ringing signal and forcesthe ConversationMode.
In this condition, if CS = 0V, the output pin ONHK
goes to 0V.
After the detection of the ONHK = 0, the Card
Controller must set the SLIC in Conversation
Mode to remove the internal latching of the
RX
On/Offhook information.
CONTROL INTERFACE BETWEEN THE SLIC
AND THE CARD CONTROLLER
The SLIC states and functions are controlled by
microprocessor or interface latches of a second
generation combo through seven wires that de-
fine a parallel digital interface.
The seven pins of the digital interface have the
following functions:
- Chip select input (CS)
- Poweron/off input (PWON)
- Ring enable input (RNG)
- AutomaticSBY input (AUT)
- Limitingcurrent input (LIM)
- On hook/Offhook detectionoutput (ONHK)
- GroundKey detectionoutput (GDK)
The four input pins PWON, RNG, AUT and LIM,
set the status of the SLIC as shown in the follow-
ing table.
The output pin ONHK is equals to 0V when the
line is in OFF hook condition(l
line
> 7,5mA) and is
equal to + 5V when the line is in On hook condi-
tion (I
line
< 5,5mA).
The output pin GDK monitors the ground key
function when the SLIC is in Conversation (CVS)
Mode and the DC operatingregion (limiting or re-
sistive) in Test (TS) Mode. When the SLIC is in
Conversation (CVS) Mode and I
GDK
(longitudinal
current) > 12mA, pin GDKis set to 0V ;
Operating Mode
Input Pin
PWON
1
1
1
0
0
0
0
1
1
1
Output Pin
RNG
0
0
0
0
1
1
0
1
1
1
AUT
1
0
0
0
1
0
1
1
0
0
LIM
X
1
0
X
X
X
X
X
1
0
ONHK
GDK
Conversation 25mA
Conversation 40mA
Conversation 60mA
Stand-by
Automatic Stand-by
Power-down
Test Mode
Ringing (CVS 25mA)
Ringing (CVS 40mA)
Ringing (CVS 60mA)
1 on-hook
0 off-hook
1 Ground key not detected.
0 Ground key detected.
Disable
C1 Comparator Output
1 on-hook
0 off-hook
Disable
0 Limiting Region
1 Resistive Region
Disable
N.B. :
When Ringing Mode is selected, you must choose also which of the three possible Conversation Modes. The SLIC will automatically
select if Off-Hook conditionwill be detected during ringing.
When I
GDK
< 8mA, pin GDKset to+ 5V
The longitudinal current (I
GDK
) is defined as fol-
lows :
I
GDK
=I
b
I
a
2
Where I
a
is the current sourced from pin TIP and
I
b
is the current sunk into pin RING.
The CS input pin allows to connectthe I/Opins of
the digital interfacesof manySLIC together.
L3000S - L3092
12/32
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L30030G-1 | Class G Fuse Blocks |
| L30030G-2 | Class G Fuse Blocks |
| L30030G-3 | CAP CER 1.5UF 50V Y5V 1812 |
| L3092 | Subscriber Line Interface(用于短波/超短波通信系統(tǒng)的用戶線接口) |
| L3100B | Overvoltage and Overcurrent Protection for Telecom Line(用于電信線路的過流和過壓保護(hù)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| L3000TN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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