F
F
u
u
j
j
i
i
t
t
s
s
u
u
P
P
L
L
L
L
F
F
r
r
e
e
q
q
u
u
e
e
n
n
c
c
y
y
S
S
y
y
n
n
t
t
h
h
e
e
s
s
i
i
z
z
e
e
r
r
I
I
C
C
s
s
M
M
B
B
1
1
5
5
0
0
0
0
E
E
B
B
2
2
0
0
B
B
E
E
v
v
a
a
l
l
u
u
a
a
t
t
i
i
o
o
n
n
B
B
o
o
a
a
r
r
d
d
M
M
a
a
n
n
u
u
a
a
l
l
2003.Feb.Rev0.1
5.2.Board layout
Top layer Bottom layer
Marking
F73
xxx
The direction of the IC
- 6 -