- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384582 > L3000NSO (意法半導(dǎo)體) SLIC KIT OPTIMIZED FOR APPLICATIONS WITH BOTH FIRST AND SECOND GENERATION COMBOS PDF資料下載
參數(shù)資料
| 型號： | L3000NSO |
| 廠商： | 意法半導(dǎo)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(yīng)用 |
| 文件頁數(shù)： | 12/32頁 |
| 文件大小： | 412K |
| 代理商： | L3000NSO |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁當前第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
6) RINGING MODE
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 L3000N with a super imposed DC
voltageof 24Vtyp.
This low level sinewave can be obtained also
from COMBO connecting RGIN pin to RX
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
crosses zero.
When this mode is activated, the L3000N 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 autonomouslyby
the SLIC, without waiting for a commandfrom the
control processor, using a patentedsystem which
allows detection during a ringing burst ; when the
off-hook conditionis detected, the SLIC stops the
ringing signal and forces the 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
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
followingfunctions:
- Chip select input(CS)
- Poweron/off input (PWON)
- Ring enable input(RNG)
- AutomaticSBY input (AUT)
- Limitingcurrent input (LIM)
- On hook/Off hookdetection output (ONHK)
- Ground Key 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 operating region (limiting or re-
sistive) in Test (TS) Mode. When the SLIC is in
Conversation (CVS) Mode and I
GDK
(longitudinal
current) > 12mA, pin GDK is 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 condition will 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 currentsunk into pin RING.
The CS input pin allows to connect the I/O pins of
the digital interfacesof manySLIC together.
L3000N - L3092
12/32
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L3000N | Subscriber Line Interface(用戶線路接口設(shè)備) |
| L3030 | Subscriber Line Interface(用戶線路接口設(shè)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(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。