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參數資料
| 型號： | L9313 |
| 英文描述： | Line Interface and Line Access Circuit Full-Feature SLIC and Ringing for TR-57 Applications |
| 中文描述： | 線路接口和線路接入電路全功能SLIC和敲響訓練班- 57應用 |
| 文件頁數： | 1/40頁 |
| 文件大小： | 746K |
| 代理商： | L9313 |
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Data Sheet
September 2001
L9313 Line Interface and Line Access Circuit
Full-Feature SLIC and Ringing Relay for TR-57 Applications
Introduction
The Agere Systems Inc. L9313 is a combination full-
feature, ultralow-power SLIC, solid-state ringing
access relay, and line test matrix. It is part of a pin-
for-pin compatible family of devices designed to
serve a wide variety of applications. The L9313 is
optimized for TR-57 applications where forward and
reverse battery and ground start are required.
Features
SLIC
I
5 V and battery operation
I
Optional automatic battery switch
I
Seven operational modes
I
Appropriate for 58 dB longitudinal balance applica-
tions
I
Minimal external components required at all inter-
faces
I
Ultralow power dissipation
I
Software/hardware adjustable dc parameters and
supervision thresholds
I
Ground start compatible
Solid-State Ring Relay
I
Low impulse noise
I
Current-limited switches/thermal protection
Applications
I
Pair Gain
I
Digital Loop Carrier (DLC)
I
Central Office (CO)
I
Fiber-in-the-Loop (FITL)
Description
The L9313 electronic line interface and line access
circuit (LILAC) provides all the functions that are nec-
essary to interface a codec to the tip and ring of a
subscriber loop, integrating the battery feed and ring-
ing access relay in one low-power, low-cost package.
The L9313 requires a 5 V and battery supply to oper-
ate. Included is an automatic battery switch. The bat-
tery feed offers forward and reverse battery, on-hook
transmission, and ground start operational modes. It
also has a low-power scan and a disconnect mode.
In all operating states, this IC is designed for minimal
power dissipation. This device is designed to mini-
mize the number of external components required at
all interfaces.
The dc template, current limit, and overhead voltage
and loop supervision threshold are programmable via
an applied voltage source. The voltage source may
be an external programmable voltage source or
derived from the V
REF
SLIC output.
The integrated solid-state switch offers power ringing
access. Impulse noise is minimized, thus eliminating
the need for external zero-cross switching circuitry.
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