LE88231数据手册集成电路（IC）的电信规格书PDF

描述 Description

The Le88231 Tracking Battery VoicePort device implements a dual-channel telephone line interface by providing all the necessary voice interface functions from the high voltage subscriber line to the µP/DSP digital interface. This device reduces system level cost, space, and power by achieving the highest level of voice integration possible. Designers benefit by having a simple, cost effective, low power and dense, interface design without sacrificing features or functionality. The programmable, feature rich VoicePort devices provide a highly functional line interface which meets the requirements of short and medium loop (up to 1500 Ohms total) applications. Features include: high voltage switching regulator, self-test, line test capabilities, integrated ringing (up to 140-Vpk), worldwide software programmability, flexible signal generator with tone cadencing, caller ID generation and all BORSCHT functions. These VoicePort device features are crucial for designing cost-effective, full-featured Voice over Broadband solutions.

Please consider this deviceLE9632

特性 Features

Complete BORSCHT function in a single VoicePort device for two channels
• Battery Feed, Over-voltage support, integrated Ringing, line Supervision, Codec, Hybrid (2W/4W), Test
Integrated Power Management
• Integrated high voltage switching regulator controllers
• Wide input voltage range (VSW =+3.3V to +35 V)
• Switching power supply tracks line voltage minimizing active & ringing state power dissipation
• Low power Idle and On-hook transmission states
Worldwide Programmability
• Two-wire AC impedance, Balance Impedance, Gain
• DC feed voltage and current limit
• Ringing frequency, voltage and current limit
• 12 kHz and 16 kHz Metering
• Programmable loop closure and ring trip thresholds
Ringing
• 5 REN with pin for pin compatible 100-V (Le88211) and 150-V (Le88231) devices
• Up to 140-Vpk internal balanced sinusoidal or trapezoidal ringing with programmable DC offset
• Unbalanced ringing for PBX trunk compatibility (Le88231 device only)
Powerful signal generator
• Universal Caller ID generation
• Up to 4 simultaneous tones
• Automatic cadencing feature
Subscriber Loop Test/Self Test support
• Comprehensive line sensing
• Integrated self test capabilities
• Line fault detection and reporting
• Loop supervision, AC/DC faults
• Test load switch (Le88231)
Pin selectable PCM/MPI or GCI interface
G.711 µ-law, A-law, or 16 bit linear coding
Integrated 150 mW 3-V or 5-V Relay Driver
Small footprint package - Exposed pad 80-pin LQFP
Pin-compatible wide band version available (16-kHz sampling mode)

简介

LE88231属于集成电路（IC）的电信。由制造生产的LE88231电信电信接口集成电路 (IC) 为通信网络接口提供特定功能和控制，例如以太网切换、线路驱动器、ISDN、放大器、通道扩展器、数字锁相环、DTMF、音频发生器和解码器、回声消除、检测器和发生器、DDA、电话线路监控器和主叫号码标识。