Octal External Ringing SLAC
Status: In Production
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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.
Low Density Chip Set:
Octal SLAC (codec) + Long Loop SLICs
Le792388 (codec) + Le79271 (SLIC) / Le79272 (Dual SLIC)
ZL792588 (codec with External/ Internal Ringing) + Le79271 (SLIC) / Le79272 (Dual SLIC)
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
NGCC Octal SLAC
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