AM79R70 - Ringing SLIC
The AMD family of subscriber line interface circuit (SLIC) products provide the telephone interface functions required throughout the worldwide market.
AMD SLIC devices address all major telephony markets including central office (CO), private branch exchange (PBX), digital loop carrier (DLC), fiber
PRELIMINARY Am79R70 Ringing Subscriber Line Interface Circuit DISTINCTIVE CHARACTERISTICS s Ideal for ISDN-TA and set top applications s On-chip ringing with on-chip ring-trip detector s Low standby state power s Battery operation: VBAT1: 40 V to 67 V VBAT2: 19 V to VBAT1 s On-chip battery switching and feed selection s On-hook transmission s Polarity reversal option s Programmable constant-current feed s Programmable Open Circuit voltage s Program
AM79R70 Features
* including current limiting, on-hook transmission, polarity reversal, tipopen, and loop-current detection. These features allow reduction of linecard cost by minimizing component count, conserving board space, and supporting automated manufacturing. The AMD SLIC devices provide the two- to four-wire
