ATAM893X-TKHYZ ATMEL [ATMEL Corporation], ATAM893X-TKHYZ Datasheet - Page 81

• Manufacturer Part Number: ATAM893X-TKHYZ
• Description: Flash Version for ATAR080, ATAR090/890 and ATAR092/892
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 5-62. Burst Modulation 1
4680C–4BMCU–01/05
Counter 2/2
Counter 3
TOG3
TOG2
CM1
CM2
T3O
CL3
M3
M2
0 1 0 1 2 3 4 5 0 1 0 1 2 3 4 5 0 10 1 2 3 4 50 1 0 1
3
0
Figure 5-60. Frequency Measurement
Figure 5-61. Event Counter with Time Gate
Combination Mode 11: Burst Modulation 1
Timer 2 mode 1/2:
Timer 2 output mode 1/6:
Timer 3 mode 6:
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.
1
Counter 3
Counter 3
Register
Register
T3CP-
TOG2
T3CP-
TOG2
T3R
T3R
T3I
T3I
2
0 0 1 2 3 4 5 6 7 8 9 10
0 0 1 2 3 4 5 6 7 8 910
3
5 0 1 0 1
Capture value = 0
5 0 1 0 1
Capture value = 0
12-bit compare counter/8-bit compare counter and 4-bit prescaler
Carrier frequency burst modulation controlled by Timer 2 output
Timer 2 compare match toggles the output flip-flop (M2) to the
Timer 3
(M2)
5 0 1 0 1
11121314151617
11
5 0 1 0 1
0
3
1 2 3 4 5 6 7 8 9 10 1112131415161718
0 1
5 0 1 0 1
0
Capture value = 17
5 0 1 0 1
2
Capture value = 11
1
5 0 1 0 1
3
2
5 0 1 0 1
ATAM893-D
4
0 1 2 3 4 5
3
Capt. value = 18
5 0 1 0 1
Capture value = 4
0 1
2
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