T48C862M-R3 datasheet(81/107 Pages) ATMEL

Numer części	T48C862M-R3

Szczegółowy opis	Microcontroller with UHF ASK/FSK Transmitter

PDF	107 Pages

Scroll/Zoom	100%

Producent	ATMEL [ATMEL Corporation]

Strona internetowa	http://www.atmel.com

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81 / 107 page

T48C862-R3

4554A–4BMCU–02/03

Combination Mode 5:

Biphase Modulation 2

SSI mode 1:

8-bit shift register internal data output (SO) to the Timer 2

modulator stage

Timer 2 mode 3:

8-bit compare counter and 4-bit prescaler

Timer 2 output mode 4:

The modulator 2 of Timer 2 modulates the SSI data output

to Biphase code

The 4-bit stage can be used as prescaler for the SSI to generate the stop signal for mod-

ulator 2. The SSI has a special mode to supply the prescaler via the shift clock.

The control output signal (OMSK) of the SSI is used as stop signal for the modulator.

Figure 73 shows an example for a 13-bit Biphase telegram.

Figure 78. Biphase Modulation 2

000

2345

Counter 2/1 = Compare Register 2/1 (= 5)

Bit 7 Bit 6

Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

SCLI

Buffer full

SIR

MSM

Timer 2

Mode 3

SCL

Counter 2/1

OMSK

T2O

T48C862M-R3 Arkusz danych(PDF) 81 Page - ATMEL Corporation