PT2272-L5 データシートの表示（PDF） - Princeton Technology

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PT2272-L5

PT2272 / 2272-M2S / Remote Control Decoder / Available in DIP and SOP

Princeton Technology 

Tel: 886-2-66296288

Fax: 886-2-29174598

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

Remote Control Decoder

PT2272

OPERATION FLOWCHART

DECODER WITHOUT DATA OUTPUT PIN

1. When Power is turned on, PT2272 activates the Stand-By Mode.

2. It then searches for signals. If there is no signal received, it remains in the Stand-By Mode;

otherwise, the address bits received are compared with the address configuration of the pins.

3. The VT goes high signifying the validation of transmission only when there are two (2) continuous

frames that contain matched address bits; otherwise, VT will not be activated and the Stand-By

Mode remains active.

4. Then, the Address Bits are again checked. Two continuous mismatches of the address bits would

disable the VT and make the Stand-By Mode active; otherwise, the address bits are continuously

checked.

Power ON

Stand-By Mode

No

Signal In?

Yes

No

Address Bits

Match?

Yes

Address Bits No

Match?

Yes

Activate VT

Disable VT

Yes Address Bits

Still Match?

No

Yes

Address Bits No

Still Match?

PT2272 V3.7

- 11 -

June, 2008

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