W91031 查看數據表（PDF） - Winbond

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W91031

CALLING LINE IDENTIFIER

Winbond 

Preliminary W91031

GENERAL DESCRIPTION

The Winbond Caller Identification device W91031, is a low power CMOS integrated circuit used to

receive physical layer signals transmitted according to Bellcore and British Telecom (BT)

specifications. There are two types of Caller Identifications, the first type is on-hook calling with caller

ID message and the second type is call on waiting. The W91031 device provides all the features and

functions of the Caller Identification specification for both these types, including FSK demodulation,

Tone Alert Signal detection and ring detection. The FSK demodulation function can demodulate Bell

202 and CCITT V.23 Frequency Shift Keying (FSK) with 1200 baud rate. The Tone Alert Signal detect

function can detect the dual tones of the Bellcore CPE* Tone Alerting Signal (CAS) and the BT idle

State and Loop State Tone Alert Signal. The line reversal for BT, ring burst for CCA or ring signal for

Bellcore can be detected by the ring detector.

There are two modes of FSK data output interface. The first mode is a data transfer activated by the

device, whose clock and data change depending upon the changing frequency of the FSK analog

signal input. The second mode allows a microcontroller to extract 8-bit data from the device serially;

the device notifies the micro-controller when 8-bit data has been received.

Note: "CPE*" Customer Primises Equipment

FEATURES AND APPLICATIONS

Features

• Compatible with Bellcore TR-NWT-000030 & SR-TSV-002476, British Telecom (BT) SIN227, U.K.

Cable Communications Association (CCA) specification

• Ring and line reversal detection

• Bellcore CPE Alerting Signal (CAS) and BT idle State and Loop State Tone Alerting Signal

detection use dual tone alerting signal detector

• BELL 202 and CCITT V.23 FSK demodulation with 1200 baud rate

• Use 3.579545 MHz crystal or ceramic resonator

• Low power CMOS technology with sleep mode

• High input sensitivity

• Variable gain input amplifier

• FSK carry detect output

• Two modes for 3-wire FSK data interface

• Packaged in 24-pin 0.6 inch (600 mil) plastic DIP and 24-pin 0.3 inch (300 mil) plastic SOP

Applications

• Bellcore Calling Identity Delivery (CID), and BT Calling Line Identity Presentation (CLIP), CCA CLIP

systems

• Feature phones

• Phone set adjunct boxes

• FAX and answering machines

• Data base telephone system and Computer Telephony Integration (CTI) systems

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