Pro-X CODEC/SLCC

Part No. W684386
Datasheet  Request PDF
Description The W684386, implements a quad channel FXS telephone line interface optimized for short loop applications. It integrates SLCC (Subscriber Line Control Circuit) functionality with a quad programmable CODEC and a quad DC-to-DC controllers. The SLCC supports internal ringing up to 90 VPK (5 REN at 4k ft) ideal for Customer Premise Equipment (CPE). The CODEC can be configured for μ-law, A-law or 16-bit linear PCM encoding. It also supports a comprehensive set of signaling capabilities required to supervise and control the telephone lines. These include tone generation, ring tones, DTMF generation as well as FSK and metering pulse generation. An on-chip Pulse Width Modulation (PWM) driver allows control of a per channel DC-to-DC converter or a centralized transformer-based DC-to-DC converter. Programmable impedance and trans-hybrid balancing allow for worldwide deployment.
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Diagram  Block Diagram

 

Application Diagram

 

Features
  • Performs complete BORSCHT functions for four channels on a single device
  • Internal balanced and unbalanced ringing up to 90 V PK (5 REN up to 4 kft)
  • Integrated Power Management options
    • Integrated per channel DC-to-DC controller
    • Centralized Transformer DC-to-DC controller
    • Programmable External Battery Switching
  • Programmable linefeed characteristics
    • Ringing frequency, amplitude, cadence
    • Trapezoidal and Sinusoidal waveforms
    • Two-wire AC impedance, transhybrid balance
    • Constant Current feed (20 to 41 mA)
    • Ring trip and loop closure threshold
    • Ground Key Detect
    • External ringing relay and ring trip support
    • Soft Polarity Reversal
  • Programmable signal generation
    • DTMF generation
    • Metering pulse generation (12/16 kHz)
    • Enhanced Caller ID (FSK) generation (Type I and Type II)
    • Tone generation (up to four simultaneous)
    • G.711 µ-Law/A-Law / 16-bit linear PCM audio
    • Programmable audio path gains
  • Loop test and diagnostics support
    • Integrated loopback modes
    • Real-time linefeed monitoring
    • On-chip temperature sensor
    • PCM and SPI bus digital interfaces
    • PCM Master and Slave modes supported
  • On-chip PLL for flexible clocking options including 1.000 MHz and 2.000 MHz BCLK operation
  • 3.3V operation
Package QFP-128
Other Files  W684386ProductBrief.pdf
Development Tools N/A
Others

Parametric

Part Number DESCRIPTION Package

W684386FG

Pb-Free, quad channel FXS telephone line interface, µ-law/A-law or 16-bit linear PCM

QFP-128

Contact us: CODEC@nuvoton.com