LE88010
Single Channel FXO Codec
Overview
| The Le88010 VoicePort SLAC device, in combination with an analog Data Access Arrangement (DAA) such as the LITELINK DAA from IXYS, implements all the voice functions necessary to properly terminate and monitor the customer premises side of a PSTN line and provide linear or G.711 A- or µ-Law encoded voice output over a standard PCM or GCI highway. The Le88010 device is ideal for use in voice enabled DSL modems that implement lifeline POTS and support PBX functionality. This device reduces system level cost, space, and power by achieving a high level of voice integration and adds programmability of transmission and signalling features. Designers benefit by having a simple, cost effective, low power and dense, interface design without sacrificing features or functionality. |
Detailed Block Diagram
Features & Benefits
- In combination with a DAA, such as the LITELINK DAA from IXYS, provides a complete phone line termination-to-digital interface solution
- Fully programmable SLAC device
- Disconnect, Ringing signal, Line-in-use and Line polarity detection,
- Line supervision for parallel devices connecting to subscriber line
- Small footprint package - 44-pin QFN
- Minimal external discrete components required
- Compatible with solid state or transformer DAA interfaces
- High speed, pin selectable PCM/MPI or GCI interface
- Microprocessor interface
- GCI interface option
- Programmability
- Two-wire AC impedance
- Input/Output mode selection for one relay driver and five general purpose digital I/O pins.
- Adapts to all ringing frequencies
- Disconnect, line polarity and line-in-use thresholds
- DTMF tone generators
- Dial pulse and DTMF cadence
- Special feature support
- DTMF tones
- Dial pulses
- Caller ID pass-through
- Numeric address signaling
- On hook transmission
- Integrated 150 mW 3-V or 5-V Relay Driver
- Supports lifeline POTS in DSL IAD applications
Applications
Typical Applications
- Voice Enabled DSL Modems
- Voice over IP/ATM
- Integrated Access Devices (IAD)
- Smart Residential Gateways (SRG) and Routers
- Set-Top Box with PSTN Line Interface
- PBX trunk interface
- FXO interfaces
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