ZL792588
Octal External Ringing Subscriber Line Audio-processing Circuit, NGCC
Overview
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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. |
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
- 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)
- Enhanced line control
- DTMF and Modem Tone Detection
- Tone generation (DTMF, FSK, and arbitrary tone)
- Standard PCM and MPI digital interfaces
- General purpose I/O pins, can be used as relay drivers