Rainbow-electronics ATAR862-8 User Manual download pdf (Page 78)

ATAR862-8

4589B–4BMCU–02/03

Combination Mode 1:

Burst Modulation

SSI mode 1: 8-bit NRZ and internal data SO output to the Timer 2

modulator stage

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

and DCG

Timer 2 output mode 3: Duty cycle burst generator

Figure 76. Carrier Frequency Burst Modulation with the SSI Internal Data Output

Combination Mode 2:

Biphase Modulation 1

SSI mode 1: 8-bit shift register internal data output (SO) to the 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 4: The modulator 2 of Timer 2 modulates the SSI internal

data output to Biphase code

Figure 77. Biphase Modulation 1

1 201201201201201201201201201201201201201

DCGO

Counter 2

TOG2

T2O

Counter = compare register (=2)

Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 Bit 9 Bit 10 Bit 11 Bit 12 Bit 13

TOG2

T2O

0000

0011 0101

1111

8-bit SR-data

Bit 7 Bit 0

Data: 00110101

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 105 106

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Rainbow-electronics ATAR862-8 User Manual Page 78