MT88E45BN1 Microchip

MT88E45 4-Wire Calling Number Identification Circuit 2 (4-Wire CNIC2) Data Sheet June 2006 Features Compatible with: Ordering Information Bellcore GR-30-CORE, SR-TSV-002476, MT88E45BN 20 Pin SSOP Tubes MT88E45BS 20 Pin SOIC Tubes ANSI/TIA/EIA-716, TIA/EIA-777 MT88E45BSR 20 Pin SOIC Tape & Reel MT88E45BNR 20 Pin SSOP Tape & Reel ETSI ETS 300 778-1 (FSK only variant) & -2 MT88E45BN1 20 Pin SSOP* Tubes MT88E45BNR1 20 Pin SSOP* Tape & Reel, BT (British Telecom) SIN227 & SIN242 Bake & Drypack MT88E45BS1 20 Pin SOIC* Tubes, Bake & Drypack Bellcore CPE Alerting Signal (CAS), ETSI Dual MT88E45BSR1 20 Pin SOIC* Tubes, Bake & Drypack Tone Alerting Signal (DT-AS), BT Idle State and *Pb Free Matte Tin Loop State Tone Alert Signal detection -40C to +85C 1200 baud Bell 202 and CCITT V.23 FSK demodulation Applications Separate differential input amplifiers with adjustable gain for Tip/Ring and telephone hybrid Bellcore CID (Calling Identity Delivery) and or speech IC connections CIDCW (Calling Identity Delivery on Call Waiting) telephones and adjuncts Selectable 3-wire FSK data interface (bit stream or 1 byte buffer) ETSI, BT CLIP (Calling Line Identity Presentation) and CLIP with Call Waiting telephones and Facility to monitor the stop bit for framing error adjuncts check Fax and answering machines FSK Carrier detect status output Computer Telephony Integration (CTI) systems 3 to 5V +/- 10% supply voltage Uses 3.579545 MHz crystal or ceramic resonator Low power CMOS with power down MODE FSKen+Tip/Ring CASen + DATA IN1+ Anti-Alias FSK FSK Data Timing Filter Bandpass Demodulator Recovery - DCLK IN1- PWDN PWDN GS1 FSKen PWDN CD Carrier + IN2+ CASen DR Detector DR/STD - IN2- Hybrid CASen STD 2130Hz GS2 MODE PWDN Bandpass Guard Tone ST/GT FSKen CASen Time Bias Detection V REF Algorithm Generator 2750Hz EST Bandpass PWDN Control Bit Decode Vdd Oscillator Vss CASen OSC1 OSC2 CB2 CB0 CB1 Figure 1 - Functional Block Diagram 1 Zarlink Semiconductor Inc. Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc. Copyright 2001-2006, Zarlink Semiconductor Inc. All Rights Reserved. MuxMT88E45 Data Sheet Description The MT88E45B is a low power CMOS integrated circuit suitable for receiving the physical layer signals used in North American (Bellcore) Calling Identity Delivery on Call Waiting (CIDCW) and Calling Identity Delivery (CID) services. It is also suitable for ETSI and BT Calling Line Identity Presentation (CLIP) and CLIP with Call Waiting services. The MT88E45B contains a 1200 baud Bell 202/CCITT V.23 FSK demodulator and a CAS/DT-AS detector. Two input op-amps allow the MT88E45B to be connected to both Tip/Ring and the telephone hybrid or speech IC receive pair for optimal CIDCW telephone architectural implementation. FSK demodulation is always on Tip/Ring, while CAS detection can be on Tip/Ring or Hybrid Receive. Tip/Ring CAS detection is required for the Bellcore/TIA Multiple Extension Interworking (MEI) and BTs on-hook CLIP. A selectable FSK data interface allows the data to be processed as a bit stream or extracted from a 1 byte on chip buffer. Power management has been incorporated to power down the FSK or CAS section when not required. Full chip power down is also available. The MT88E45B is suitable for applications using a fixed power source (with a +/-10% variation) between 3 and 5 V. 2 Zarlink Semiconductor Inc.