4.7. Clock Circuits
4.7.1. On-Board Oscillators
Figure 10.
Stratix 10 GX FPGA Board - Clock Inputs and Default Frequencies
4C 4D 4E 4F 4K 4L 4M 4N
1C 1D 1E 1F 1K 1L 1M 1N
2A
2B
2C
2F
2L
2M
2N
3A
3B
3C
3I
3J
3K
3L
Si516 (X1)
REFCLK_SDI
(148.5 MHz LVDS)
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
REFCLK1 (155.52 MHz LVDS)
REFCLK_QSFPI1 (644.53125 MHz LVDS)
REFCLK_DP (135 MHz LVDS)
REFCLK4 (156.25 MHz LVDS)
REFCLK_FMCA (625 MHz LVDS)
CLK_ENET (125 MHz LVDS)
CLK_CONFIG (125 MHz LVDS)
Si5341A
(U7)
MAX V
(U11)
OUT3
OUT2
OUT1
OUT0
CLK_FPGA_B3L (100 MHz LVDS)
CLK_HILO (133 MHz LVDS)
Si5338A
(U9)
MAXV_OSC_CLK1 (125 MHz LVCMOS)
CLK_MAXV_50M (50 MHz LVCMOS)
Intel
Stratix 10
FPGA (U1)
OSC_CLK_1 (Configuration Clock)
FPGA_OSC_CLK1
(125 MHz LVCMOS)
CLK_FPGA_50M
(50 MHz LVCMOS)
MAXV_OSC_CLK1 (125 MHz)
PCIE_OB_REFCLK (100 MHz)
Table 31.
On-Board Oscillators
Source
Schematic Signal
Name
Frequency
I/O Standard
Stratix 10 FPGA
Pin Number
Application
U7
REFCLK1_P
155.52 MHz
LVDS
AM41
Transceiver
reference clocks
Bank 1D
REFCLK1_N
LVDS
AM40
REFCLK_QSFP1_P
644.53125 MHz
LVDS
Y38
QSFP reference
clocks
REFCLK_QSFP1_N
LVDS
Y37
REFCLK_DP_P
135 MHz
LVDS
AK38
DisplayPort
reference clocks
REFCLK_DP_N
LVDS
AK37
REFCLK4_P
156.25 MHz
LVDS
AF9
Transceiver
reference clocks
Bank 4E
REFCLK4_N
LVDS
AF10
REFCLK_FMCA_P
625 MHz
LVDS
AT9
FMC reference
clocks
REFCLK_FMCA_N
LVDS
AT10
CLK_ENET_P
125 MHz
LVDS
AN27
Ethernet clock
CLK_ENET_N
LVDS
AN28
continued...
4. Board Components
UG-20046 | 2018.07.20
Intel
®
Stratix
®
10 GX FPGA Development Kit User Guide
48