ATAR080 datasheet(53/68 Pages) ATMEL

53 / 68 page

ATAR080

4675D–4BMCU–12/04

Combination Mode 3: Manchester Modulation 1

SSI mode 1:

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

modulator stage

Timer 2 mode 1, 2, 3 or 4: 8-bit compare counter with 4-bit programmable prescaler

Timer 2 output mode 5:

Modulator 2 of Timer 2 modulates the SSI internal data

output to Manchester code

Figure 55. Manchester Modulation 1

Combination Mode 4: Manchester Modulation 2

SSI mode 1:

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

modulator stage

Timer 2 mode 3:

8-bit compare counter and 4-bit prescaler

Timer 2 output mode 5:

Modulator 2 of Timer 2 modulates the SSI data output to

Manchester 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 with the shift-clock. The

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

ure 56 is an example for a 12-bit Manchester telegram.

Figure 56. Manchester Modulation 2

TOG2

T2O

010

8-bit SR data

Bit 7

Bit 0

Bit 7

Bit 0

Data: 00110101

123

Counter 2/1 = Compare Register 2/1 (= 4)

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

ATAR080 Datasheet(PDF) 53 Page - ATMEL Corporation

ATAR080 Datasheet(HTML) 53 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

Datasheet Download

Link URL