AM79M576A - Metering Subscriber Line Interface Circuit

AMD

General Description

Am79M576A Metering Subscriber Line Interface Circuit Valid Combinations 1

Valid Combinations Valid Combinations list configurations planned to be supported in volume for this device.

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Datasheet Details

Part number	AM79M576A
Manufacturer	AMD
File Size	292.54 KB
Description	Metering Subscriber Line Interface Circuit
Datasheet	AM79M576A Datasheet

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Am79M576A Metering Subscriber Line Interface Circuit DISTINCTIVE CHARACTERISTICS s Programmable constant-resistance feed s Programmable loop-detect threshold s Ground-key detect s Performs polarity reversal s Ring relay driver s Supports 2.2 Vrms metering (12 and 16 kHz) s Line feed characteristics independent of battery variations s On-chip switching regulator for low-power dissipation s Two-wire impedance set by single external impedance s Tip Open state for ground-start lines s On-hook transmission BLOCK DIAGRAM A(TIP) Ring Relay Driver Ground-Key Detector Input Decoder and Control VCCRING RINGOUT/DGND C1 C2 C3 E0 HPA HPB Two-Wire Interface DET Signal Transmission VTX RSN B(RING) Off-Hook Detector RD Power-Feed Controller RDC m o c . u 4 t e e h s a t a .