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PT2604

Remote Control Decoder IC

Princeton Technology 

Tel: 886-2-66296288

Fax: 886-2-29174598

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

Remote Control Decoder IC

PT2604

FUNCTION DESCRIPTION

PT2604 may be paired with our remote control encoder -- PT2607. When PT2604 receives data

transmitted by encoders such as PT2607, it deciphers the 12 address bits and the 6 data bits. The DIN

Pin Signal activates the oscillator which in turn decodes the incoming address and data bits. Please

note under the Standby Mode, the oscillator is disabled. It is activated only if the DIN Pin is receiving

data.

PT2604 then compares the address which was received twice in a consecutive manner with its local

address. If all the data received match the local address of PT2607, the 6 bits of data are decoded and

transferred to the output pins. The VT Pin then is set to “HIGH” to indicate a that transmission is valid

until no signal or unmatched address codes are received. Please note the VT Pin is set to “HIGH” only

when there is valid transmission, otherwise, it is in “LOW” State.

Please refer to the Operation Flowchart diagram.

OPERATION FLOWCHART

Power On

Standby Mode

NO

Code In?

Disable VT &

Ignore the Res t of

This Word

Y ES

Address Bits

NO

Match?

Y ES

Store Data

Y ES

Mat ch

NO

with Previously

Stored Data?

Y ES

NO

Cons ecutive

Ch e cking ?

Y ES

Latch Data to O utput

& Activate VT

PT2604 V1.1

NO

Address or

Data Error?

Y ES

-4-

April, 2006

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