20
ECP5 Versa Development Board
Figure 13. SERDES
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
X1 PCIe Board Fingers
All Nets to SMAs are 100-ohm differential pairs.
The P and N traces shall be <20mil matched in length
All Nets are 85-ohm differential pairs.
The P and N traces shall be <20mil matched in length
B side = Primary Component Side(TOP)
A side = Secondary Component Side(BOTTOM)
Schematic symbols rev 4.1
SERDES
PHY 1 & 2
SGMII
SMA
SMA
x1_PERp0
x1_PERn0
PRSNT3#
PCIE_3V3
PRSNT1#
x1_PERp0
x1_PERn0
x1_PETp0
x1_PETn0
PCIE_3V3
HDRXN0_D0CH1HDRXP0_D0CH1
HDTXP0_D0CH1 HDTXN0_D0CH1
PCIE_CLKP
PCIE_CLKN
PRSNT1#
PRSNT3#
REFCLKP_D0
REFCLKN_D0
x1_PETp0
x1_PETn0
HDRXP0_D0CH1
HDRXN0_D0CH1
HDTXN0_D0CH0
HDTXP0_D0CH0
HDTXN0_D0CH1
HDTXP0_D0CH1
HDRXN0_D1CH1
HDRXP0_D1CH1
HDRXN0_D1CH0
HDRXP0_D1CH0
HDTXN0_D1CH0
HDTXP0_D1CH0
HDTXN0_D1CH1
HDTXP0_D1CH1
REFCLKP_D1
REFCLKN_D1
12_0VIN
VCCHTX0
3_3V
VCCA0
VCCHTX0 VCCA0
VCCHTX1
VCCA1
VCCHTX1 VCCA1
PCIE_CLKP[9]
PCIE_CLKN[9]
PCIE_PERSTN[3]
PRSNT[9]
REFCLKP_D0 [9]
REFCLKN_D0 [9]
HDTXP0_D1CH0
[5]
HDTXN0_D1CH0
[5]
HDTXP0_D1CH1
[6]
HDTXN0_D1CH1
[6]
HDRXP0_D1CH0
[5]
HDRXN0_D1CH0
[5]
HDRXP0_D1CH1
[6]
HDRXN0_D1CH1
[6]
REFCLKP_D1 [9]
REFCLKN_D1 [9]
Date:
Size
Schematic Rev
ofSheet
Title
Lattice Semiconductor Applications
Email: techsupport@Latticesemi.com
Board Rev
Project
B
B
11
SERDES
ECP5 VERSA Eval Board
B
Friday, August 21, 2015 4
Date:
Size
Schematic Rev
ofSheet
Title
Lattice Semiconductor Applications
Email: techsupport@Latticesemi.com
Board Rev
Project
B
B
11
SERDES
ECP5 VERSA Eval Board
B
Friday, August 21, 2015 4
Date:
Size
Schematic Rev
ofSheet
Title
Lattice Semiconductor Applications
Email: techsupport@Latticesemi.com
Board Rev
Project
B
B
11
SERDES
ECP5 VERSA Eval Board
B
Friday, August 21, 2015 4
C92
10NF-0402SMT
R72
4_7K-0603SMT
J5
SMA
12
3
4
5
C91
100NF-0402SMT
C89
10NF-0402SMT
C111
100NF-0402SMT
C90
1NF-0402SMT
CN1
PCI Express x1 Edge Finger Conn.
PRSNT1#
A1
+12V
A2
+12V
A3
GND
A4
JTAG2
A5
JTAG3
A6
JTAG4
A7
JTAG5
A8
+3.3V
A9
+3.3V
A10
PERST#
A11
GND
A12
REFCLK+
A13
REFCLK-
A14
GND
A15
PERp0
A16
PERn0
A17
GND
A18
+12V
B1
+12V
B2
RSVD_B3
B3
GND
B4
SMCLK
B5
SMDAT
B6
GND
B7
+3.3V
B8
JTAG1
B9
3.3Vaux
B10
WAKE#
B11
RSVD_B12
B12
GND
B13
PETp0
B14
PETn0
B15
GND
B16
PRSNT3#
B17
GND
B18
LFE5UM-45F-BG381
U1H
VCCHTX0_D0CH0
T7
VCCHTX0_D1CH0
T11
VCCHTX1_D0CH1
T10
VCCHTX1_D1CH1
T14
VCCHRX0_D0CH0
T8
VCCHRX0_D1CH0
T12
VCCHRX1_D0CH1
T9
VCCHRX1_D1CH1
T13
HDTXP0_D0CH0
W4
HDTXN0_D0CH0
W5
HDTXP0_D0CH1
W8
HDTXN0_D0CH1
W9
HDTXP0_D1CH1
W17
HDTXN0_D1CH1
W18
HDTXP0_D1CH0
W13
HDTXN0_D1CH0
W14
REFCLKP_D0
Y11
REFCLKN_D0
Y12
HDRXP0_D0CH0
Y5
HDRXN0_D0CH0
Y6
HDRXP0_D0CH1
Y7
HDRXN0_D0CH1
Y8
HDRXP0_D1CH0
Y14
HDRXN0_D1CH0
Y15
HDRXP0_D1CH1
Y16
HDRXN0_D1CH1
Y17
REFCLKP_D1
Y19
REFCLKN_D1
W20
J8
SMA
12
3
4
5
C113
10NF-0402SMT
J4
HEADER 3X2
2
4
6
1
3
5
R178 OPEN-0603SMT
C105
1NF-0402SMT
C87100NFX5R-0402SMT
TP6
Testpoint
1
C93
1NF-0402SMT
C112
1NF-0402SMT
C88
100NF-0402SMT
J7
SMA
12
3
4
5
J6
SMA
12
3
4
5
C110
10NF-0402SMT
C106
100NF-0402SMT
C86100NFX5R-0402SMT
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