STFPC320 查看數據表（PDF） - STMicroelectronics

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STFPC320

Front panel controller/driver with standby power management and real-time clock

STMicroelectronics 

Remote control protocols

STFPC320

15.6

Matsushita remote control format

The modulated carrier is usually derived from 440 kHz and is 1/12 of the frequency with ½

duty cycle.

When data are transmitted repeatedly, the frame cycle is 104.7 ms or 240 period.

A frame consists of a syn pulse, a five-bit custom code, six-bit data code, a five-bit inverted

custom code and a six-bit inverted data code.

The timing definitions of the output code waveform are shown in Figure 37.

Figure 37. Matsushita remote control protocol

240T

240T

240T

240T

C0 C1 C2 C3 C4 D1 D2 D3 D4 D5 C’0C’1C’2C’3C’4D’0D’1D’2D’3D’4D’5

Sym pulse

Custom

code 5 bit

Custom code Inverted custom Inverted data

5 bit

code 5 bit

code 6 bit

Sym pulse

8T

8T

End of transmission

Data “0” 2T 2T

Data “1” 2T 6T

End of transmission 2T

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