Catalog
Next Gen Carrier Chipset Octal SLAC
Key Features
• * Optimized for Next Generation Broadband xDSL and triple play applications
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• + Eliminates transients that could cause CRC errors
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• * Best-in-class GR-844 equivalent testing capability
• * Ideal for high density, medium and large line count applications
• * API-compatible with VE790 Series designs
• * High performance digital signal processor provides programmable control of all major line card functions
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• + A-law/µ-law and linear codec/filter
• + Transmit and receive gain, Two-wire AC impedance, Transhybrid balance, Equalization
• + DC loop feeding
• + Loop supervision
• + Internal ringing generation and integrated ring-trip detection
• + Metering generation at 12 kHz and 16 kHz
• Envelope shaping and level control
• + Envelope shaping and level control
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• * Enhanced line control and line-test support
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• + DTMF and Modem Tone Detection
• + GR-909 and GR-844 Line and circuit testing capability
• + Tone generation (DTMF, FSK, and arbitrary tone)
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• * Standard PCM and MPI digital interfaces
• * General purpose I/O pins, can be used as relay drivers
• * Features with Le79124 or LE79128 VCP
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• + 72 to 128 channel call aggregation
• + GR-844 equivalent line testing
Description
AI
The ZL79238 Next Generation Octal Subscriber Line Audio-processing Circuit (SLAC), in combination with the single channel LE79271 or dual LE79272 SLIC, implements a DSL friendly, high density 8-channel universal telephone line interface with wideband capability. This enables the design of a low cost, high performance, fully software programmable line interface with worldwide applicability. All AC, DC, and signaling parameters are programmable via a microprocessor interface. The ZL792388 has an integrated test tool box which can be used standalone or for high density line cards you can offload a lot of the basic call control and test functions to the LE79124 or LE79128 VCP to help manage calls or resolve faults to the line or line circuit. A full API is available to run on a host processor to simplify software integration.