Rainbow Electronics ATAR862-4 - Manual (Page 84)

84
ATAR862-4
4552B–4BMCU–02/03
Figure 84. Biphase Demodulation
Combination Mode Timer 2 and Timer 3
Figure 85. Combination Timer 3 and Timer 2
0 1 1 1 1
0 1
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
Synchronize Biphase demodulation mode Timer 3
mode
T3EX
Q1=SI
CM31=SCI
SR-DATA
0 0 0 0
T3I
Reset
Counter 3
1 0 1 0 1 0
Bit 0
8-bit counter 3
RES
Compare 3/1
T3CO1
T3CP
T3CO2
Timer 3 - control
T3O
CL3
T3I
T3EX
SYSCL
T1OUT
POUT
I/O-bus
Compare 3/2
T3CM1 T3CM2
T3C T3ST
Modulator 3
Demodu-
lator 3
Control
SO
TOG3
INT5
RES
CM31
T3I
T3EX
TOG2
SI
SCI
SSI
CP3
4-bit counter 2/1
RES OVF1
Compare 2/1
T2CO1
CM1
POUT
SSI
CL2/2
DCG
T2M1 P4CR
8-bit counter 2/2
RES OVF2
Compare 2/2
T2CO2 T2CM
TOG2
INT4
Biphase-,
Manchester-
modulator
OUTPUT
MOUT
M2
T2O
Timer 2
modulator 2
output-stage
T2M2
Control
(RE, FE, SCO, OMSK)
SSI
T2C
CL2/1
TOG3
SYSCL
T1OUT
SCL
Timer 2 - control
M2
T3CS T3M
POUT
DCGO
SO
T2I
I/O-bus
I/O-bus