EM92547A Datasheet, PDF (2/13 Pages) ELAN Microelectronics Corp – CALLER ID FSK DECODER

EM92547A/B/D
CALLER ID FSK DECODER
General Description
The EM92547 is a single-chip CMOS receiver IC designed to work in telephone
equipment incorporating Calling Number Delivery (CND) capabilities. CND capabilities
can be add to equipment such as telephone, adjunct units, answering machines, and
facsimile machines, by using the EM92547 and any standard microcontroller IC. The
EM92547 detects and qualifies the incoming ring signal, performs an energy detect on
incoming FSK signal, and demodulates the FSK data in accordance with BELL 202
standards. Integrating the above functions the equipment manufacturer a cost-effective
means of implementing CND capabilities into their products.
Features
• Compatible with Bellcore GR-30-CORE (formerly as TR-NWT-000030).
• Compatible with British Telecom (BT) SIN227 & SIN242.
• FSK demodulator for Bell 202 and ITU-T V.23 (formerly as CCITT V.23)
• On-chip ring detector
• Ring detect and carrier detect output for MCU interrupt
• Power down mode operation
• On-chip band pass filter
• FSK demodulation with energy detect
• High input sensitivity
• Low current consumption in power down mode
• Single supply from 3.5V to 6V
• Clock Frequencies: 3.58MHz or 455KHz for EM92547A
: 3.58MHz for EM92547B/D
• Package series --- 16-pin DIP or 16-pin SOP (150 mil)
EM92547BP/DP for 16-pin DIP
EM92547BN/DN for 16-pin SOP (150 mil)
Application
• adjunct units
• answering machines
• feature phones
• fax machines
• computer interface products
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* This specification are subject to be changed without notice.
1998
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