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AM79C02AJC Datasheet(PDF) 1 Page - Advanced Micro Devices |
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AM79C02AJC Datasheet(HTML) 1 Page - Advanced Micro Devices |
1 / 48 page Publication# 09875 Rev: J Amendment: /0 Issue Date: December 1999 Am79C02/03/031(A) Dual Subscriber Line Audio Processing Circuit (DSLAC™) Devices DISTINCTIVE CHARACTERISTICS s Software programmable: — SLIC impedance — Transhybrid balance — Transmit and receive gains — Equalization — Digital I/O pins — Time Slot Assigner — PCM transmit clock edge options s Adaptive transhybrid balance filter (A suffix only) s A-law or µ-law coding s Dual PCM ports — Up to 8.192 MHz each (128 channels per port) s 2.048 MHz or 4.096 MHz master clock s Direct transformer drive s Built-in test modes s Low power CMOS s Mixed mode (analog and digital) impedance scaling s Performance characteristics guaranteed over 12 dB gain range GENERAL DESCRIPTION The Am79C02/03/031(A) Dual Subscriber Line Audio Processing Circuit (DSLAC device) integrates the key functions of an analog linecard into a single high-per- formance, programmable dual codec/filter device. The DSLAC device is based on the proven design of the reliable Am7901A Subscriber Line Audio Processing Circuit (SLAC™ device). The advanced architecture of the DSLAC device implements two independent chan- nels and employs digital filters to allow software control of transmission, thus providing a cost effective solution for the analog to PCM function of a linecard. The Am79C02/03/031(A) DSLAC device’s advanced CMOS technology makes this an economical device that has both the functionality and the low power con- sumption needed in linecard designs to maximize line- card density at minimum cost. When used with two AMD SLICs, the DSLAC device provides software config- urable solutions to the BORSCHT function. |
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