AN4099 datasheet(21/39 Pages) STMICROELECTRONICS

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AN4099 数据表(PDF) 21 Page - STMicroelectronics

部件名	AN4099

功能描述	Implementing transmitters and receivers for infrared remote control protocols using STM32F0xx and STM32F3xx microcontrollers

PDF	39 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

21 / 39 page

AN4099

Infrared receiver

Doc ID 023110 Rev 2

21/39

Figure 18.

Bit determination by the rising edge: low pulse

●

If the low pulse duration is equal to T and the last bit determined is "0" => the actual bit

is logic0.

●

If the low pulse duration is equal to 2T and the last bit determined is "0" => the actual

bit is Inv (invalid case: this case cannot be released).

●

If the low pulse duration is equal to T and the last bit determined is "1" => the actual bit

is Nan (no bit: this bit is determined at the next falling edge).

●

If the low pulse duration is equal to 2T and the last bit determined is "1" => the actual

bit is logic0.

ai18534

Last bit : 0

Actual bit: 0

Last bit : 0

Actual bit: inv

Last bit : 1

Actual bit: Nan

Last bit : 1

Actual bit: 0

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