描述 Description

The MT88E43 Calling Number Identification Circuit 2 (ECNIC2) is a low power CMOS integrated circuit intended for receiving physical layer signals transmitted according to BT (British Telecom) SIN227 & SIN242, the U.K.’s CCA (Cable Communications Association) TW/P&E/312 and Bellcore GR-30-CORE & SR-TSV-002476 specifications. The MT88E43 is suitable for applications using a fixed voltage power source between 3 and 5 V ±10.

特性 Features

? Compatible with:

? British Telecom (BT) SIN227 & SIN242

? U.K.’s Cable Communications Association (CCA) specification TW/P&E/312

? Bellcore GR-30-CORE (formerly known as TR-NWT-000030) & SR-TSV-002476

? Bellcore CPE Alerting Signal (CAS) and BT Idle State Tone Alert Signal detection

? Ring and line reversal detection

? 1200 baud Bell 202 and CCITT V.23 Frequency Shift Keying (FSK) demodulation

? 3 or 5 V ±10 supply voltage

? High input sensitivity (-40 dBV Tone and FSK Detection)

? Selectable 3-wire data interface (microcontroller or MT88E43 controlled)

? Low power CMOS with powerdown mode

? Input gain adjustable amplifier

? Carrier detect status output

? Uses 3.58 MHz crystal

Applications

? BT Calling Line Identity Presentation (CLIP), CCA CLIP, and Bellcore Calling Identity Delivery (CID)

systems

? Feature phones, including Analog Display Services Interface (ADSI) phones

? Phone set adjunct boxes

? FAX and answering machines

? Database query and Computer Telephony Integration (CTI) systems