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R A M
F L A S H
Heart Beat
L E D
(red)
Control and
monitor signals
M C 6 8 3 3 2
Microcontroller
FIFO #1
FIFO #2
Dual Serial
R S - 2 3 2
Signal
Communications
Transceiver
Isolation
Controller
Isolated
DC - DC
Converter
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2-wire
Data
Transceiver
C A N
Routing
Controller
Logic
S W C
Transceiver
U P L
(UBP transceiver)
D L C
(VPW Interface)
H B C C
P W M
(PWM Interface)
Transceiver
K - line
Transceiver
L - line
Transmitter
logic
Power
Regulation
&
Distribution
Power
L E D
(green)
Figure 1 AVT-718 Block Diagram
11
J P 1
1 1
C A N _ H
Relay
1 3
C A N _ L
Relay
1 5
S W C
Relay
1 7
U B P
Relay
1
V P W B u s
Relay
3
P W M B u s +
Relay
Relay
5
P W M B u s -
7
K-line
Relay
9
L-line
Relay
1 9
2 1
Transient
Protection
Chassis Gnd.
J P 1
P 3
1 2
6
1 4
1 4
1 6
9
1 8
3
2
2
4
6
1 0
8
7
1 0
1 5
2 0
8
2 2
1 2
1
1 1
Batt +
1 3
Sig. Gnd.
5
4
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