Universal Remote Control R7 - SPECS SHEET Manual do Utilizador descarregar pdf (Página 12)

S3F80KB_AN_REV 0.00 (Preliminary Spec) IR REMOTE CONTROLLER

3.1 TRANSMISSION MODULE

3.1.1 IR Transmission Description

There are three sections to explain transmission module. IR signal is consist of the frame. Frame is consist of

leader, custom code, data code and end bit. It is consist of the bit which is combined with crrier frequency.

3.1.2 Bit Transmission

set Timer1 Data

T1match = #01H

clear CounterA

turn on REM

BIT_HIGH

BIT_HIGH_LOOP

T1match ==

#02H

BIT_LOW

BIT_LOW_LOOP

T1match ==

#04H

set Timer1 Data

turn off REM

BIT_END

yes

Figure 5. Bit Transmission Flow

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 30 31

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