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

SYSTEM DIAGRAM

The W91031 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 W91031 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.

Tip

Ring

Line

Interface

LCD Display Keypads

Winbond

Caller ID

(W91031)

Micro

Controller

Speaker

Ringer

DTMF

Generator

Figure 5. System Diagram for Caller ID Application

Handset

Publication Release Date: August 2000

-5-

Revision A1

Share Link: