11
P W M
Transceiver
I/O Ports
D L C
(VPW Interface)
F L A S H
H B C C
( P W M I n t e r f a c e )
F I F O # 1
M C 6 8 3 3 2
Microcontroller
Dual Serial
C o m m u n i c a t i o n s
Controller
F I F O # 2
Signal
Isolation
R S - 2 3 2
Transceiver
Isolated
D C - D C
Converter
To Host Computer
Heart Beat
L E D
(red)
J P 1
K - line
Transceiver
L - line
Transmitter
logic
Control and
monitor signals
Transient
Protection
P o w e r
Regulation
&
Distribution
P o w e r
L E D
(green)
R A M
C A N
Controller
R e l a y
D a t a
R o u t i n g
Logic
U P L
(UBP transceiver)
V P W B u s
Batt +
Sig. Gnd.
Chassis Gnd.
1 1
1 3
1 5
1 7
1
P W M B u s +
P W M B u s -
U B P
S W C
C A N _ L
C A N _ H
K-line
L-line
3
5
7
9
J P 1
1 2
1 4
1 6
1 8
2
4
6
8
1 0
P 3
6
1 4
9
3
2
1 0
7
1 5
1 3
4
5
2 0
2 2
1 9
2 1
R e l a y
R e l a y
R e l a y
R e l a y
R e l a y
R e l a y
R e l a y
R e l a y
8
1 2
1
1 1
2-wire
Transceiver
S W C
Transceiver
Figure 1 AVT-718 Block Diagram
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