22
LatticeSC PCI Express x4 Evaluation Board
Lattice Semiconductor
User’s Guide
Figure 13. Differential I/O Loops
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
LOOP_P11
LOOP_N
11
LOOP_P4
LOOP_N
4
LOOP_P0
LOOP_N
0
LOOP_P5
LOOP_N
5
LOOP_P12
LOOP_N
12
LOOP_P6
LOOP_N
6
LOOP_P13
LOOP_N
13
LOOP_P7
LOOP_N
7
LOOP_N
14
LOOP_P14
LOOP_P8
LOOP_N
8
LOOP_N
15
LOOP_P15
LOOP_P9
LOOP_N
9
VR
EF
_BAN
K2
VR
EF
_BAN
K2
LOOP_P10
LOOP_N
10
VR
EF
_BAN
K2
VR
EF
_BAN
K3
PLL_C
LK_I
N
N
PLL_C
LK_I
N
P
LOOP_P3
LOOP_N
3
LOOP_P2
LOOP_N
2
LOOP_P1
LOOP_N
1
LOOP_P0
LOOP_N
0
LOOP_P1
LOOP_N
1
OSC
_I
N
_2
VR
EF
_BAN
K3
LOOP_P2
LOOP_N
2
LOOP_P4
LOOP_N
4
LOOP_P11
LOOP_N
11
LOOP_P5
LOOP_N
5
LOOP_P12
LOOP_N
12
LOOP_P6
LOOP_N
6
LOOP_N
13
LOOP_P13
LOOP_P7
LOOP_N
7
LOOP_N
14
LOOP_P14
LOOP_P8
LOOP_N
8
LOOP_N
15
LOOP_P15
LOOP_P9
LOOP_N
9
LOOP_P10
LOOP_N
10
LOOP_P3
LOOP_N
3
VR
EF
_BAN
K3
PC
LK_C
LK_I
N
P
PC
LK_C
LK_I
N
N
LA27
LA33
LA31
LA25
LA29
LA17
LA13
LA23
LA21
LA5
LA15
LA11
LA7
LA19
LA3
LA1
LA9
LA34
LA32
LA22
LA26
LA16
LA30
LA14
LA20
LA12
LA28
LA24
LA10
LA6
LA8
LA4
LA2
LA18
LA1
LA2
LA4
LA3
LA6
LA8
LA7
LA5
LA10
LA12
LA11
LA9
LA14
LA16
LA15
LA13
LA18
LA20
LA19
LA17
LA22
LA24
LA23
LA21
LA26
LA28
LA27
LA25
LA30
LA32
LA31
LA29
LA33
LA34
1
_
CRE
FCL
K
-
1
_
CRE
FCL
K
+
2_C
R
EF
C
LK+
2_C
R
EF
C
LK-
2_5V
2_5V
PC
IE_C
LKN
[5
]
PC
IE_C
LKP
[5
]
OSC
_I
N
_2
[9
]
1_C
R
EF
C
LK+
[5
]
1_C
R
EF
C
LK-
[5
]
2
_
CRE
F
CL
K
-
[5
]
2_C
R
EF
C
LK+
[5]
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
Diffe
re
n
tial I/O Loops
C
81
1
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
Diffe
re
n
tial I/O Loops
C
81
1
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
Diffe
re
n
tial I/O Loops
C
81
1
RIGHT
LFSC
1152BGA
BANK2
BANK3
LF
SC
1152BGA
U1
K
RIGHT
LFSC
1152BGA
BANK2
BANK3
LF
SC
1152BGA
U1
K
P
R
16A
/URC_P
LLT
_
IN
_A
/U
RC_P
LLT
_
F
B
_B
F5
P
R
16B
/URC_P
LLC_I
N
_A
/URC_P
LLC_F
B
_
B
G5
PR
1
6
C
H7
PR
1
6
D
J7
P
R
17A
/URC_DLLT
_I
N_C/URC_DLLT
_
F
B
_D
F4
P
R
17B
/URC_DLLC_I
N_C/URC_DLLC_F
B
_
D
G4
P
R
17C/URC_P
LLT
_I
N_B
/URC_P
LLT
_
F
B
_A
N10
P
R
17D/URC_P
LLC_I
N_B
/URC_P
LLC_F
B
_A
P1
0
P
R
18A
/URC_DLLT
_I
N_D/URC_DLLT
_
F
B
_C
D2
P
R
18B
/URC_DLLC_I
N_D/URC_DLLC_F
B
_
C
E2
PR
1
8
C
H6
P
R
18D/
V
R
E
F
2_2
J6
PR
2
0
A
F3
PR
2
0
B
G3
PR
2
0
C
P9
PR
2
0
D
N9
P
R
21A
H5
PR
2
1
B
J5
PR
2
1
C
L7
P
R
21D
M7
PR
2
2
A
E1
PR
2
2
B
F1
PR
2
4
A
F2
PR
2
4
B
G2
PR
2
5
A
K5
PR
2
5
B
L5
PR
2
6
A
G1
P
R
26B
H1
PR
2
9
A
J4
PR
2
9
B
K4
P
R
29C/
V
R
E
F
1_2
L8
P
R
2
9
D
/D
IFFR
_
2
M8
PR
3
1
A
J3
PR
3
1
B
K3
PR
3
1
C
L6
PR
3
1
D
M6
P
R
33A
H2
P
R
33B
J2
PR
3
3
C
N8
PR
3
3
D
P8
PR
3
5
A
K2
PR
3
5
B
L2
PR
3
5
C
M5
PR
3
5
D
N5
PR
3
7
A
M4
PR
3
7
B
N4
PR
3
7
C
P1
1
PR
3
7
D
R11
PR
3
9
A
M3
PR
3
9
B
N3
PR
3
9
C
P7
PR
3
9
D
R7
PR
4
1
A
J1
PR
4
1
B
K1
P
R
41C
P5
PR
4
1
D
R5
PR
4
2
A
M2
PR
4
2
B
N2
P
R
42C
U10
PR
4
2
D
T1
0
P
R
43A
L1
PR
4
3
B
M1
PR
4
3
C
P6
PR
4
3
D
R6
PR
4
6
A
N1
PR
4
6
B
P1
P
R
46C
R8
P
R
46D
T8
P
R
47A
/P
C
LK
T
2_1
R3
PR
4
7
B/
PC
L
KC
2
_
1
R4
PR
4
7
C
/PC
L
KT
2
_
3
U11
P
R
47D/
P
C
LK
C2_3
T1
1
P
R
48A
/P
CLK
T
2_0
P2
P
R
48B
/P
CLK
C
2_0
R2
P
R
48C/
P
CLK
T
2_2
T9
P
R
48D/
P
C
LK
C2_2
U9
P
R
56A
T2
P
R
56B
U2
P
R
56C
V1
0
P
R
56D
W1
0
P
R
57A
U1
P
R
57B
V1
P
R
57C
V9
P
R
57D
W9
P
R
59A
W1
P
R
59B
Y1
P
R
60A
V2
P
R
60B
W2
PR
6
0
C
V1
1
PR
6
0
D
W1
1
P
R
61A
W3
P
R
61B
Y3
P
R
63A
W4
P
R
63B
Y4
P
R
63C
Y6
P
R
63D
AA6
P
R
64A
AA1
P
R
64B
AB1
P
R
65A
Y2
P
R
65B
AA2
P
R
65C
Y7
P
R
65D
AA7
P
R
67A
AC
1
P
R
67B
AD
1
P
R
68A
Y5
P
R
68B
AA5
P
R
69A
AB2
P
R
69B
AC
2
P
R
76A
AB3
P
R
76B
AC
3
P
R
76C
AA9
P
R
76D/DI
F
F
R
_3
AA8
P
R
77A
AB4
P
R
77B
AC
4
P
R
77C
Y1
1
PR
7
7
D
AA1
1
P
R
78A
AE1
P
R
78B
AF
1
P
R
78C
AB5
P
R
78D
AC
5
P
R
80A
AD
2
P
R
80B
AE2
P
R
80C
AD
5
P
R
80D
AE5
P
R
81A
AE3
P
R
81B
AF
3
PR
8
1
C
AA1
0
PR
8
1
D
AB1
0
P
R
82A
AJ
1
P
R
82B
AK1
PR
8
2
C
AB8
P
R
82D
AC
8
P
R
84A
AF
2
P
R
84B
AG
2
PR
8
4
C
AC
6
P
R
84D
AD
6
P
R
85A
AE4
P
R
85B
AF
4
P
R
85C
AF
5
P
R
85D
AF
6
P
R
86A
AH
2
P
R
86B
AJ
2
P
R
86C
AC
7
P
R
86D
AD
7
P
R
89A
AH
3
P
R
89B
AJ
3
PR
8
9
C
AD
8
P
R
89D/
V
RE
F
2
_3
AE8
P
R
90A
AG
1
P
R
90B
AH
1
P
R
90C
AC
9
PR
9
0
D
AB9
P
R
91A
AK2
P
R
91B
AL
2
P
R
91C
AG
5
PR
9
1
D
AH
5
P
R
93A
AL
1
P
R
93B
AM
1
P
R
93C/LRC_DLLT
_I
N_E
/LRC_DLLT
_F
B
_
F
AJ
5
P
R
93D/LRC_DLLC_I
N_E
/LRC_DLLC_F
B
_
F
AK5
P
R
94A
AJ
4
P
R
94B
AH
4
P
R
94C
AD
9
P
R
94D
AD
1
0
P
R
95A
/LRC_DLLT
_I
N_F
/LRC_DLLT
_F
B
_
E
AL
3
P
R
95B
/LRC_DLLC_I
N_F
/LRC_DLLC_F
B
_
E
AL
4
P
R
95C/LRC_P
L
LT
_I
N_B
/LRC_P
L
LT
_F
B
_
A
AG
6
P
R
95D/LRC_P
LLC_I
N
_B
/LRC_P
L
LC_F
B
_
A
AG
7
PR
5
0
A/
PC
L
KT
3
_
0
T3
P
R
50B
/P
CLK
C
3_0
T4
PR
5
0
C
/PC
L
KT
3
_
1
U6
P
R
50D/
P
CLK
C
3_1
V6
P
R
51A
T5
P
R
51B
U5
P
R
51C/
P
CLK
T
3_3
U8
P
R
51D/
P
CLK
C
3_3
V8
P
R
52A
R1
P
R
52B
T1
P
R
52C/
P
CLK
T
3_2
U7
PR
5
2
D
/PC
L
KC
3
_
2
V7
P
R
55A
V5
P
R
55B
W5
P
R
55C/
V
RE
F
1
_3
W8
PR
5
5
D
Y8
R
127
1K_AD
J
/SM
T
3M
M
R
127
1K_AD
J
/SM
T
3M
M
LA1
2_767004
LA1
2_767004
5V
1
SC
L
2
GN
D
3
SD
A
4
CLK
1
5
CLK
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
C15
8
10NF
-0603SMT
C15
8
10NF
-0603SMT
R1
6
7
51R-0603SM
T
R1
6
7
51R-0603SM
T
J4
8
J
ohns
on 142-0711-201
J4
8
J
ohns
on 142-0711-201
1
2
R
166
51R-0603SM
T
R
166
51R-0603SM
T
R1
6
9
51R-0603SM
T
R1
6
9
51R-0603SM
T
R
124
1K_AD
J
/SM
T
3M
M
R
124
1K_AD
J
/SM
T
3M
M
R1
2
8
1K-0603SMT
R1
2
8
1K-0603SMT
R12
5
1_1K-0603SMT
R12
5
1_1K-0603SMT
R1
6
8
51R-0603SM
T
R1
6
8
51R-0603SM
T
J5
0
J
ohns
on 142-0711-201
J5
0
J
ohns
on 142-0711-201
1
2
J5
1
J
ohns
on 142-0711-201
J5
1
J
ohns
on 142-0711-201
1
2
R1
2
3
1K-0603SMT
R1
2
3
1K-0603SMT
R1
2
2
1K-0603SMT
R1
2
2
1K-0603SMT
R12
9
1_1K-0603SMT
R12
9
1_1K-0603SMT
PP62PP62
1
2
R1
2
6
1K-0603SMT
R1
2
6
1K-0603SMT
J4
9
J
ohns
on 142-0711-201
J4
9
J
ohns
on 142-0711-201
1
2
C157
10NF
-0603SMT
C157
10NF
-0603SMT
PP61PP61
1
2