Catalog
Next Gen Octal SLAC Device
Key Features
• Optimized for Next Generation Broadband xDSL and triple play applications* Eliminates transients that could cause CRC errors
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• Best-in-class GR-844 equivalent testing capability
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• Ideal for high density, medium and large line count applications
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• API-compatible with VE790 Series designs
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• High performance digital signal processor provides programmable control of all major line card functions* 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* 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
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• General purpose I/O pins, can be used as relay drivers
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• Features with Le79124 or LE79128 VCP* 72 to 128 channel call aggregation
• * GR-844 equivalent line testing
Description
AI
The LE792388 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 LE792388 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.
**Low Density Chip Set:**
Octal SLAC (codec) + Long Loop SLICs
[Le792388 (codec)](https://www.microchip.com/wwwproducts/en/LE792388) + [Le79271 (SLIC)](https://www.microchip.com/wwwproducts/en/LE79271) / [Le79272 (Dual SLIC)](https://www.microchip.com/wwwproducts/en/LE79272)
[ZL792588 (codec with External/ Internal Ringing)](https://www.microchip.com/wwwproducts/en/ZL792588) + [Le79271 (SLIC)](https://www.microchip.com/wwwproducts/en/LE79271) / [Le79272 (Dual SLIC)](https://www.microchip.com/wwwproducts/en/LE79272)
