Catalog
Octal External Ringing SLAC
Key Features
• * Ideal for high density, medium and large line count applications
• * Wideband 16 kHz sampling mode capability
• * 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
• + External battery-backed or earth-backed ringing
• + Internal ringing generation
• + Loop supervision and ring-trip detection
• + Metering generation and shaping (12 kHz and 16 kHz)
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• * Enhanced line control
•
• + DTMF and Modem Tone Detection
• + 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
Description
AI
The ZL792588 Next Generation Octal External Ringing Subscriber Line Audio-processing Circuit (SLAC) device, in combination with the Le79271 SLIC device, implements a high density eight-channel universal telephone line interface with wideband capability for internal or external ringing applications. 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.
**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)