CMX602B
Calling Line Identifier plus Call Waiting
(CLI and CIDCW)
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Features:
Description
- CLI and CIDCW Detector with: 'Zero-Power' Ring or Line Reversal Detector
- V.23/Bell 202 FSK Demodulator with Data Retiming Facility
- Dual Tone Alert Detector
- On and Off-Hook Operation
- Meets Belcore, British Telecom and ETSI 'CLI and CIDCW' Specifications
- µC Interrupt/Wake-Up Output to Minimize System Operating Power
- Calling Line ID and Waiting Systems
- Adjunct Boxes
- Computer Security Systems
- Call Monitoring
- Computer Billing Systems
- Telephone Based Utility Metering
- No-ring Calling
- CMX602BD4 - 16-pin SOIC
- CMX602BE4 - 16-pin TSSOP
- CMX602BP3 - 16-pin PDIP
- 2.7 to 5.5 V power supply
The CMX602B is a low power CMOS integrated circuit for the reception of the physical layer signals used in BT’s Calling Line Identification Service (CLIP), Bellcore’s Calling Identity Delivery system (CID), the Cable Communications Association’s Caller Display Services (CDS), and similar evolving services.
It also meets the requirements of emerging Caller Identity with Call Waiting services (CIDCW).
The device includes a ‘zero-power’ ring or line polarity reversal detector, a dual-tone (2130Hz plus 2750Hz) Tone Alert Signal detector and a 1200-baud FSK V23/Bell202 compatible asynchronous data demodulator with a data retiming circuit which removes the need for a UART in the associated µController.
It is suitable for ‘on-hook’ use in systems to BT specifications SIN227 and SIN242, Bellcore GR-30-CORE and SR-TSV-002476, CCA TW/P7 and E/312, ETSI 300-659 (Parts 1 and 2), ETSI 300 778 (parts 1 and 2) and Mercury Communications MNR 19.
Block Diagram
