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%.

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