CrossLink-NX Evaluation Board
User Guide
© 2019-2020 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as listed at
www.latticesemi.com/legal
.
All other brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice.
36
FPGA-EB-02028-1.
3
Figure A.6. SERDES SMAs/Switches/FMC Control
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
Serdes Bank
DIP SWITCH
Switch Signal Map
1
8
4
3
2
7
6
5
M14
N14
N15
M15
M16
M18
M17
N16
SWITCH
U3C Pin
Signal
SWITCH1
SWITCH0
SWITCH7
SWITCH4
SWITCH3
SWITCH2
SWITCH6
SWITCH5
3.3v
Bank2
PLL filter with DCR<=0.1 ohm
DC must be <<5% drop across
anti-resonance resistor under
worst case
R_ext is chosen for 100 ohm Diff
Place PLL series resistor,
two caps and r_ext right
underneath the chip on the
reverse side of the board
Two 50 ohm Lookbacks Traces: 6 inches and 10 inches
Place TPs close to FPGA
Minimize length as short as possible
short_stub_trace. TP close to FPGA
Route SMA pairs as 100 ohm differential
1-2 = 125 Mhz (Default)
2-3 = 200 Mhz
Use little to no stub
between selection
resistors
DNI
V3P3
VCCIO2
VCCIO2
V1P0_LDO
V1P8_LDO
VCCIO2
V1P8_LDO
V3P3
FMC_SDA
{10}
FMC_SCL
{10}
PS_POR_B
{10}
FMC_PRSNT
{10}
FMC_TMS
{10}
FMC_TDO
{10}
FMC_TDI
{10}
FMC_TCK
{10}
LED8
{7}
LED9
{7}
LED10
{7}
LED11
{7}
LED12
{7}
LED13
{7}
REFCLKP_FMC
{10}
REFCLKN_FMC
{10}
TXDP_FMC
{10}
TXDN_FMC
{10}
RXDP_FMC
{10}
RXDN_FMC
{10}
Date:
Size
Schematic Rev
of
Sheet
Title
Lattice Semiconductor Applications
http://www.latticesemi.com/Support
Board Rev
Project
Friday, Nov 22, 2019
B
B-1
14
6
Serdes SMAs/Switches/FMC Control
CrossLink-NX Evaluation Board
B
Date:
Size
Schematic Rev
of
Sheet
Title
Lattice Semiconductor Applications
http://www.latticesemi.com/Support
Board Rev
Project
Friday, Nov 22, 2019
B
B-1
14
6
Serdes SMAs/Switches/FMC Control
CrossLink-NX Evaluation Board
B
Date:
Size
Schematic Rev
of
Sheet
Title
Lattice Semiconductor Applications
http://www.latticesemi.com/Support
Board Rev
Project
Friday, Nov 22, 2019
B
B-1
14
6
Serdes SMAs/Switches/FMC Control
CrossLink-NX Evaluation Board
B
R54
0
R62
10K
R41
100 ohm
DNI
C58
10uF
C57
0.1uF
U5
AK5DAF1-200.0000T2
OE
1
NC
2
G
N
D
3
OP
4
ON
5
V
C
C
6
TP_V1P0_VCCSD
1
R49
0
R65
0
DNI
RN1C
EXB2HV472JV
4_7K
3
14
RN1H
EXB2HV472JV
4_7K
8
9
R53
0.1
0603
1%
R45
1.15K
TP4
1
FB2
MPZ1005S121CT000
TP_V1P8_VCCPLLSD
1
R50
10K
L10
600ohm 500mA
1
2
RN1A
EXB2HV472JV
4_7K
1
16
R48
0
DNI
R43
100 ohm
DNI
C50
0.1uF
R42
0.1
0603
1%
J11
SMA
DNI
1
2
3
4
5
RN1F
EXB2HV472JV
4_7K
6
11
C52
0.1uF
C45
10uF
R58
0
J15
SMA
DNI
1
2
3
4
5
R64
0
DNI
TP3
1
R61
0
DNI
LIFCL-40-BG400
U3C
VCCIO2
U19
VCCIO2
N17
PR49A
W19
PR49B
Y19
PR47A
V18
PR47B
V19
PR46A
T18
PR46B
U18
PR44A
W20
PR44B
V20
PR42A
U20
PR42B
T20
PR40A
R17
PR40B
R18
PR38A
P17
PR38B
P18
PR36A
P19
PR36B
P20
PR34A/PCLKT2_2
N19
PR34B
N20
PR32A/PCLKT2_1
M19
PR32B
M20
PR30A/PCLKT2_0
M17
PR30B
M18
PR27A
N15
PR27B
N16
PR26A
M16
PR26B
M15
PR24A
N14
PR24B
M14
NC26
R20
NC27
R19
NC28
P16
NC29
P15
J9
Header_2x1
1
1
2
2
C43
10uF
J7
Header_2x1
1
1
2
2
R47
0
DNI
C54
0.1uF
C59
0.1uF
FB1
MPZ1005S121CT000
C55
0.1uF
R51
0
DNI
R56
0
J8
Header_2x1
1
1
2
2
R57
0
DNI
RN1D
EXB2HV472JV
4_7K
4
13
LIFCL-40-BG400
U3L
VCCPLLSD0
C13
SD0_REXT
C14
SD0_RXDP
A16
SD0_RXDN
A15
SD0_REFRET
B14
SD0_TXDP
A13
SD0_TXDN
A12
SD0_REFCLKP
C12
SD0_REFCLKN
C11
VCCSD0_1
B15
VCCSD0_2
B13
VCCAUXSD
B11
R52
0
DNI
R66
0
DNI
J13
CON3
1
2
3
J12
SMA
DNI
1
2
3
4
5
R46
0
C56
1U
F
-1
6V
-0
8
05
S
M
T
C51
10uF
J16
SMA
DNI
1
2
3
4
5
R55
0
TP_V1P8_VCCAUXSD
1
RN1B
EXB2HV472JV
4_7K
2
15
SW1
SMD SW DIP-8
Part Number = 219-8MST
FB3
MPZ1005S121CT000
C47
0.1uF
C49
0.1uF
RN1G
EXB2HV472JV
4_7K
7
10
J10
SMA
DNI
1
2
3
4
5
L11
600ohm 500mA
1
2
C46
0.1uF
R59
0
DNI
J14
SMA
DNI
1
2
3
4
5
C53
0.1uF
C60
0.1uF
U4
AK5DAF1-125.0000T2
OE
1
NC
2
G
N
D
3
OP
4
ON
5
V
C
C
6
R63
0
C48
1
U
F
-1
6V
-0
8
05
S
M
T
C44
0.1uF
R44
0.1
0603
1%
RN1E
EXB2HV472JV
4_7K
5
12
TP5
1
R60
0
SWITCH3
SWITCH2
SWITCH1
SWITCH0
SWITCH5
SWITCH6
SWITCH4
SWITCH7
SWITCH7
SWITCH6
SWITCH3
SWITCH0
SWITCH2
SWITCH4
SWITCH5
R_ext
RXDPF
RXDNF
Ref_return_pll
REFCLKP
REFCLKN
RXDP_SMA
RXDN_SMA
TXDP_SMA
TXDN_SMA
R_ext
Ref_return_pll
10_inch_long_trace
short_stub_trace
LED8
LED9
LED10
LED11
LED12
LED13
REFCLKN_SMA
REFCLKP_SMA
Ref_return_pll
SWITCH1
TXDPF
TXDNF
6_inch_long_trace
RXDP
RXDPF
RXDP_SMA
RXDN
RXDNF
RXDN_SMA
TXDP
TXDPF
TXDP_SMA
TXDN
TXDNF
TXDN_SMA
OSCP
OSCN
125MHz
125MHz_N
200MHz
200MHz_N
REFCLKP
REFCLKP_SMA
REFCLKN
REFCLKN_SMA
OSCP
OSCN
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