LE792388
Next Generation Carrier Chipset (NGCC) Octal SLAC (Codec)
Overview
We are transitioning to Microchip; this page will be directed to Le792388 product page at www.microchip.com.
| The Le792388 Next Generation Octal Subscriber Line Audio processing Circuit (SLAC) device, in combination with the Le79271 SLIC device, implements a DSL friendly, high density eight-channel universal telephone line interface. 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 and uses VCP test primitives and host routine capabilities to resolve faults to the line or line circuit. |
Detailed Block Diagram
Features & Benefits
- Optimized for Next Generation Broadband xDSL and triple play applications
- Eliminates transients that could cause CRC errors
- 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
- 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
- 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)
- Standard PCM and MPI digital interfaces
- General purpose I/O pins, can be used as relay drivers
- Features with Le79124 NGVCP
- 72 channel call aggregation
- GR-844 equivalent line testing
