PT2318 Ver la hoja de datos (PDF) - Princeton Technology

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Fabricante

PT2318

Sound Fader Controller IC

Princeton Technology 

Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

Sound Fader Controller IC

PT2318

FUNCTION DESCRIPTION

BUS INTERFACE

Data are transmitted to and from the microprocessor to the PT2318 via the SDA and SCL. The SDA

and SCL make up the BUS Interface. It should be noted that the pull-up resistors must be connected to

the positive supply voltage.

DATA VALIDITY

A data on the SDA Line is considered valid and stable only when the SCL Signal is in HIGH State. The

HIGH and LOW States of the SDA Line can only change when the SCL signal is LOW. Please refer to

the figure below.

SDA

SCL

Data Line

S ta b le ,

Da ta Va lid

START AND STOP CONDITIONS

A Start Condition is activated when

1. the SCL is set to HIGH and

2. SDA shifts from HIGH to LOW State.

Da ta

C h a ng e

Allowed

The Stop Condition is activated when

1. SCL is set to HIGH and

2. SDA shifts from LOW to HIGH State.

Please refer to the timing diagram below.

SC L

SD A

S t a rt

Stop

PT2318 V1.2

-5-

March, 2006

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