Document
Data Sheet September 2001
L9215A/G Short-Loop Sine Wave Ringing SLIC
Introduction
The Agere Systems Inc. L9215 is a subscriber line interface circuit that is optimized for short-loop, power-sensitive 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 Onboard ringing generation
s Three ringing input options: — Sine wave — PWM — Logic level square wave
s Flexible VCC options: — 5 V or 3.3 V VCC — No –5 V required
s Battery switch to minimize off-hook power
s 11 operating states: — Scan mode for minimal power dissipation — Forward and reverse battery active — On-hook transmission states — Meter pulse states — Ring mode — Disconnect mode
s Ultralow on-hook power: — 27 mW scan mode — 42 mW activ.