PT2212 データシートの表示（PDF） - Princeton Technology

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PT2212

Infrared Remote Control Transmitter

Princeton Technology 

Tel: 886-2-66296288

Fax: 886-2-29174598

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

Infrared Remote Control Transmitter

PT2212

It is highly recommended that the following notes must be strictly observed in the preparation of the

reception software:

• System Code

The 8-bit system code is transmitted twice. Therefore, you must decode both codes to be

identical.

• Data Code

The 8-bit data code is transmitted simultaneously with its inversion code. Therefore, you must

decode the data code and its inversion code and never fail to check their integrity.

SYSTEM CODE LATCH CIRCUIT

There are 8 kinds of system code that can be selected by wiring the SEL pin to any one of the output

pins-KO0 ~ KO7. The fourth bit of the system code (S3) is set to “1”, S4 to S7 bits are “0”. Please refer

to the table and diagram below.

KO connected to SEL

KO0

KO1

KO2

KO3

KO4

KO5

KO6

KO7

System Code (S2 S1 S0)

000

001

010

011

100

101

110

111

Following is the system code selection diagram.

Notes:

1. S0, S1, S2 = 010

2. System Code = 01010000 (S0 to S7)

PT2212 V1.1

- 11 -

May, 2007

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