23
LatticeSC PCI Express x4 Evaluation Board
Lattice Semiconductor
User’s Guide
Figure 14. Clocks
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
OSC
_
IN
_2
OSC
_
IN
_4
OSC
_
IN
_1
B_OSC
_N
A_OSC
_N
A_OSC
_P
B_OSC
_P
3_3V
3_3V
3_3V
3_3V
3_3V
3_3V
3_3V
3_3V
OSC
_I
N
_2
[8
]
OSC
_
IN
_1
[7
]
OSC
_
IN
_4
[2
]
B_R
EF
C
LKN
_L
[5]
B_R
EF
C
LKP_L
[5]
A_R
XR
EF
C
LK_L
[5
]
F
LASH
_C
LK
[11]
A_R
EF
C
LKN
_L
[5]
A_R
EF
C
LKP_L
[5]
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
Clo
cks
C
91
1
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
Clo
cks
C
91
1
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
Clo
cks
C
91
1
RX_REFCLK
R
211
82R
-0603SM
T
R
211
82R
-0603SM
T
J9
1
J
ohns
on 142-0711-201
J9
1
J
ohns
on 142-0711-201
1
2
R1
8
1
0R
-0603SM
T
R1
8
1
0R
-0603SM
T
R
182
0R
-0603SM
T
R
182
0R
-0603SM
T
R
138
82R
-0603SM
T
R
138
82R
-0603SM
T
R
210
82R
-0603SM
T
R
210
82R
-0603SM
T
+
C
505
10UF
-16V_T
ANT
BSM
T
+
C
505
10UF
-16V_T
ANT
BSM
T
R
143
51R
-0603SM
T
R
143
51R
-0603SM
T
Y5
C
W
-P423F
-312.
5
M
H
Z
Y5
C
W
-P423F
-312.
5
M
H
Z
Q_
N
5
Q
4
VCC
6
GND
3
DI
S
#
1
NC
2
C50
4
100NF
-0603SM
T
C50
4
100NF
-0603SM
T
J
110
J
ohns
on 142-0711-201
J
110
J
ohns
on 142-0711-201
1
2
R
214
51R
-0603SM
T
R
214
51R
-0603SM
T
C50
6
100NF
-0603SM
T
C50
6
100NF
-0603SM
T
R2
1
2
OPEN
-0603SM
T
R2
1
2
OPEN
-0603SM
T
R
213
OPEN
-0603SM
T
R
213
OPEN
-0603SM
T
J9
2
J
ohns
on 142-0711-201
J9
2
J
ohns
on 142-0711-201
1
2
C161
100NF
-0603SM
T
C161
100NF
-0603SM
T
R2
1
5
51R
-0603SM
T
R2
1
5
51R
-0603SM
T
U2
0
C
Y
2304-1
U2
0
C
Y
2304-1
RE
F
1
CLK
A
1
2
CLK
A
2
3
GN
D
4
CLK
B
1
5
CLK
B
2
6
VD
D
7
FB
K
8
C
165
100N
F
-0603SM
T
C
165
100N
F
-0603SM
T
C163
100NF
-0603SM
T
C163
100NF
-0603SM
T
J1
0
2
H
EAD
ER
2X1
J1
0
2
H
EAD
ER
2X1
1
1
2
2
Y3
C
W
-P423F
-312.
5
M
H
Z
Y3
C
W
-P423F
-312.
5
M
H
Z
Q_
N
5
Q
4
VCC
6
GND
3
DI
S
#
1
NC
2
R
134
1_6R
-0603SM
T
R
134
1_6R
-0603SM
T
R2
0
7
130R
-0
603SM
T
R2
0
7
130R
-0
603SM
T
R
205
1_6R
-0603SM
T
R
205
1_6R
-0603SM
T
Y2
C
T
S-C
B3LV-3C
-100.
00M
H
Z
Y2
C
T
S-C
B3LV-3C
-100.
00M
H
Z
N/C
1
GN
D
2
OU
T
3
Vc
c
4
R
183
OPEN
-0603SM
T
R
183
OPEN
-0603SM
T
+
C
162
10UF
-16V_TAN
TB
SMT
+
C
162
10UF
-16V_TAN
TB
SMT
J9
9
J
ohns
on 142-0711-201
J9
9
J
ohns
on 142-0711-201
1
2
R
157
51R
-0603SM
T
R
157
51R
-0603SM
T
C1
6
7
10N
F
-0603SM
T
C1
6
7
10N
F
-0603SM
T
R
209
0R
-0603SM
T
R
209
0R
-0603SM
T
C1
6
6
100N
F
-0603SM
T
C1
6
6
100N
F
-0603SM
T
R
184
OPEN
-0603SM
T
R
184
OPEN
-0603SM
T
J1
1
1
J
ohns
on 142-0711-201
J1
1
1
J
ohns
on 142-0711-201
1
2
J1
0
9
J
U
M
PER
1
J1
0
9
J
U
M
PER
1
1
2
R
206
130R
-0603SM
T
R
206
130R
-0603SM
T
Y4
110-93-314-41-001
Y4
110-93-314-41-001
Q_
N
1
Q
8
VDD
14
GND
7
R
135
130R
-0603SM
T
R
135
130R
-0603SM
T
J1
0
8
H
EAD
ER
2X1
J1
0
8
H
EAD
ER
2X1
1
1
2
2
Y1
110-93-314-41-001
Y1
110-93-314-41-001
Q_
N
1
Q
8
VDD
14
GND
7
R
208
0R
-0603SM
T
R
208
0R
-0603SM
T
R
137
82R
-0603SM
T
R
137
82R
-0603SM
T
J1
0
1
J
U
M
PER
1
J1
0
1
J
U
M
PER
1
1
2
R1
4
4
51R
-0603SM
T
R1
4
4
51R
-0603SM
T
R1
3
6
130R
-0
603SM
T
R1
3
6
130R
-0
603SM
T