PT2272 datasheet(5/22 Pages) PTC

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PT2272 V3.7

- 5 -

June, 2008

Remote Control Decoder

PT2272

PIN DESCRIPTION

Pin No.

Pin Name

I/O

Description

18pins 20pins

A0 ~ A5

Code Address Pin Nos. 0 ~ 5.

These six tri-state pins are detected by PT2272 to

determine the encoded waveform bit 0 ~ bit 5.

Each pin can be set to “0”, “1”, or “f” (floating).

1 ~ 6

A6/D5 ~ A11/D0

I/O

Code Address Pin Nos. 6 ~ 11/Data Pin Nos. 5 ~ 0.

These six pins are used as higher address input

bits or data output pins depending on the version

(type) of PT2272 used.

When used as address inputs, these pins are

tri-state input pins and each pin can be set to “0”,

“1”, or “f” (floating).

When used as output pins, these pins are driven to

VCC if (1) the address decoded from the waveform

that was received matches the address setting at

the address input pins, and (2) the corresponding

data bits received is a “1” bit. Otherwise, they are

driven to VSS.

7 ~ 8

10 ~ 13

7 ~ 8

12 ~ 15

DIN

Data Input Pin.

The encoded waveform received is serially fed to

PT2272 at this pin.

OSC 1

Oscillator Pin No.1

A resistor connected

between these two pins

determine the

OSC 2

Oscillator Pin No. 2

fundamental frequency of

PT2272.

Valid Transmission.

Active High Signal. VT in high state signifies that

PT2272 receives valid transmission waveform.

VCC

Positive Power Supply

VSS

Negative Power Supply

No Connection

10 ~ 11

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