W91031 查看數據表（PDF） - Winbond

零件编号

产品描述 (功能)

生产厂家

W91031

CALLING LINE IDENTIFIER

Winbond 

Preliminary W91031

BLOCK DIAGRAM

INP

INN

GCFB

VREF

SLEEP/

RESET

VDD

VSS

Input Pre-processor

+

Anti-alias

-

Filter

To internal

circuit

Bias Voltage

Generator

To internal

circuit

Oscillator

&

Clock Driver

FSKE

MODE

FSK Demodulation Circuit

FSK Bandpass

Filter

FSK

Demodulator

FSK Carrier

Detector

FSK

Data Output

Interface

Power Saving

Circuit

High Tone

Bandpass

Filter

Low Tone

Bandpass

Filter

Dual Tone Alert Signal Detection Circuit

High Tone

Detector

Low Tone

Detector

Guard

Time

Circuit

Interrupt

Generator

Ring Detector

DCLK

DATA

FDRN

FCDN

INTN

ALGO

ALGRC

ALGR

OSCI OSCO

RNGDI RNGRC RNGON

Figure 6. The Block Diagram of Winbond Caller ID

FUNCTIONAL DESCRIPTION

Figure 6 is shown functional blocks of W91031. The device must operate with a 3.579545 MHz

system clock and consists four major functions and decribed as follows:

Ring Detector

The application circuit in Figure 7-1 illustrates the relationship between the RNGDI, RNGRC and

RNGON signals. The three pin combination is used to detect an increase of the RNGDI voltage from

ground to a level above the Schmitt trigger high going threshold voltage VT+.

-6-

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