
U.S.
Patent
Jun.
19,
2007
Sheet
8
0f
19
US
7,233,601
B1
Conlrol
Comrol
OUT
IN
A
TX Rx
BusVcc
A
P011
'0
O
:1
9
Modular
57
7
_
f\_/
53
\
/
v
N
56
E2:
3
x
CNS
message
U
TX/RX.
LinkStatus,
7:.
UnitID
and
AUCount
E
Z
>
algorithms
0
3
A
2,
<
*
_
Down
"
" +
Control
Control
52
,_/r\
Port
RX TX
IN
OUT
BusVcc
%
FIG.9
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