ATAM894 datasheet(80/97 Pages) ATMEL

80 / 97 page

4679D–4BMCU–05/05

ATAM894

Figure 6-60.

Frequency Measurement

Figure 6-61.

Event Counter with Time Gate

Combination Mode 11: Burst Modulation 1

Timer 2 mode 1/2:

12-bit compare counter/8-bit compare counter and

4-bit prescaler

Timer 2 output mode 1/6:

Timer 2 compare match toggles the output flip-flop (M2)

to the Timer 3

Timer 3 mode 6:

Carrier frequency burst modulation controlled by Timer 2

output (M2)

The Timer 3 counter is driven by an internal or external clock source. Its compare- and compare

mode registers must be programmed to generate the carrier frequency with the output toggle

flip-flop. The output toggle flip-flop (M2) of Timer 2 is used to enable and disable the Timer 3 out-

put. The Timer 2 can be driven by the toggle output signal of Timer 3 (TOG3) or any other clock

source.

Figure 6-62.

Burst Modulation 1

0 0 1 2 34 56 78 9 10

Counter 3

TOG2

T3CP-

T3I

T3R

Capture value = 0

Capture value = 17

Capt. value = 18

11121314151617

1 2 34 56 7 8 9 101112 131415161718

0 1 23 45

0 01 2 3 45 6 7 8 910

Counter 3

TOG2

T3CP-

40 1

T3I

T3R

Capture value = 0

Capture value = 11

Cap. value = 4

0 1 0 1 23 45 0 1 01 2 3 4 5 01 0 1 2 3 45 0 1 0 1

5 0 1 0 1

5 0 10 1

5 0 1 0 1

5 0 10 1

5 0 1 0 1

CL3

Counter 3

CM1

CM2

TOG3

Counter 2/2

TOG2

T3O

ATAM894 Datasheet(PDF) 80 Page - ATMEL Corporation

ATAM894 Datasheet(HTML) 80 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 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97

Datasheet Download

Link URL