Low-Cost Ringing SLIC
Preliminary Data Sheet October 2001
L9214A/G Low-Cost Ringing SLIC
Introduction
The Agere Systems Inc. L9214 is a subs...
Description
Preliminary Data Sheet October 2001
L9214A/G Low-Cost Ringing SLIC
Introduction
The Agere Systems Inc. L9214 is a subscriber line interface circuit that is optimized to provide a very low-cost solution for short- and medium-loop applications. This device provides the complete set of line interface functionality, including power ringing needed to interface to a subscriber loop. This device has the capability to operate with a VCC supply of 3.3 V or 5 V and is designed to minimize external components required at all device interfaces.
Features
s Low-cost solution
s Onboard ringing generation with software adjustable crest factor switching
s Flexible VCC options: — 3.3 V or 5 V VCC — No –5 V required
s Power control options: — Power control resistor — Automatic battery switch to minimize off-hook power
s Eight operating states: — Scan mode for minimal power dissipation — Forward and reverse battery active — On-hook transmission states — Ring mode — Disconnect mode
s ...
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