AM79213 Datasheet | Legerity

Am79213/Am79C203/031 Advanced Subscriber Line Interface Circuit (ASLIC™) Device Advanced Subscriber Line Audio-Processing Circuit (ASLAC™) Device DISTINCTIVE CHARACTERISTICS - Digital I/O pins - A-law/µ-law selection Linear data available on PCM ports for custom pression and expansion patible with inexpensive protection networks. Acmodates low tolerance fuse resistors while maintaining longitudinal balance to Bellcore specifications. Power/Service Denial state Small physical size Integrated ring trip function Four relay drivers with built-in energy absorption zener diodes Synchronized ring relay operation: zero volts ac on, zero current off Software enabled Normal or Automatic Ring-Trip state On-chip 12 k Hz and 16 k Hz metering generation with on and off meter pulse shaping Supports loop-start and ground-start signaling 0°C to +70°C mercial operation guaranteed by production testing - 40°C to +85°C temperature range operation available Performs all of the functions of a codec-filter Single channel architecture Performs Battery-feed, Ring-trip, Signaling, Coding, Hybrid and Test (BORSCHT) functions Single hardware design meets multiple country requirements through software programming Standard microprocessor interface Industry standard PCM interface with full-time slot assignment Monitor of two-wire interface voltage and current for subscriber line diagnostics Low idle power per line On-hook transmission Only battery and +5 V supplies needed Exceeds LSSGR and CCITT central office requirements Off-hook and ground-key detectors with programmable thresholds Programmable line feed characteristics independent of battery voltage Built-in voice path test modes Analog and digital hybrid balance capability Adaptive hybrid balance capability Linear power feed with power management and thermal shutdown Features Abrupt and smooth polarity reversal Power-cross detection in Ringing and Nonringing states Software programmable - -...