W91030 Ver la hoja de datos (PDF) - Winbond

Número de pieza

componentes Descripción

Fabricante

W91030

CALLING LINE IDENTIFIER

Winbond 

Preliminary W91030B

SYSTEM DIAGRAM

The W91030B device applications include telephone systems which have caller ID features and

which can display the calling message on an LCD display. Figure 5 shows the system diagram. It

illustrates how to use the chip to connect between the tip/ring and the microcontroller in the telephone

system. The ring signal is detected by the W91030B device and then an interrupt sent to the

microcontroller. The ring detected signal will also be directed to the ringer circuit. The data can be

decoded by the microcontroller and displayed on the LCD display. The DTMF ACK signal can also be

generated by the DTMF generator if a call on waiting is performed. Other functions are the same as

the telephone set.

LCD Display

Keypads

Tip

Ring

Line

Interface

Winbond

Caller ID

(W91030B)

Micro

Controller

Speaker

Ringer

Handset

BLOCK DIAGRAM

DTMF

Generator

Figure 5. System Diagram for Caller ID Application

INP

INN

GCFB

VREF

CAP

SLEEP/

RESET

VDD

VSS

Input Pre-processor

+

Anti-alias

Filter

-

To internal

circuit

Bias Voltage

Generator

To internal

circuit

Oscillator

&

Clock Driver

FSKE MODE

Power down control

FSK Demodulation Circuit

FSK Bandpass

Filter

FSK

Demodulator

FSK Carrier

Detector

FSK

Data Output

Interface

Power down control

High Tone

Bandpass

Filter

Low Tone

Bandpass

Filter

Dual Tone Alert Signal Detection Circuit

High Tone

Detector

Guard

Time

Circuit

Low Tone

Detector

Ring Detector

Interrupt

Generator

DCLK

DATA

FDRN

FCDN

INTN

ALGO

ALGRC

ALGR

OSCI OSCO

RNGDI RNGRC

Figure 6. The Block Diagram of W91030B

RNGON

Publication Release Date: March 2000

-5-

Revision A1

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