CMX602B
CML Microcircuits
COMMUNICA
TION SEMICONDUCTORS
D/602B/2 September 2003
Calling Line Identifier
plus
Call Waiting (Type II)
Applications
•
CLI and CIDCW Adjunct Boxes
•
CLI and CIDCW Feature Phones
•
Bellcore, ETSI, British Telecom and
Mercury Systems
•
Computer Telephone Integration
•
Call Logging Systems
•
Voice-Mail Equipment
Features
•
CLI and CIDCW System Operation
•
Low Power Operation 0.5mA at 2.7V
•
Zero-Power Ring or Line Reversal
Detector
•
FSK Demodulator with Data Retiming
•
High Sensitivity CAS Tone Detection
•
Low CAS Tone Falsing in CIDCW Mode
1.1
Brief Description
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 systems. It also
meets the requirements of emerging Caller Identity with Call Waiting services (CIDCW).
The device includes a 'zero-power' ring or line reversal detector, a dual-tone (2130Hz plus 2750Hz) Tone
Alert Signal 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 use in systems to BT specifications SIN227 and SIN242, Bellcore GR-30-CORE and
SR-TSV-002476, CCA TW/P&E/312, ETSI ETS 300 659 parts 1 and 2, ETS 300 778 parts 1 and 2 and
Mercury Communications MNR 19.
2003 CML Microsystems Plc
CMLMICRO [ CML MICROCIRCUITS ]
