Sundance SMT166 - Manual (Page 13)

4.2.1.3 External clocks
One External clock and one reference are fed to the board via MMCX connectors
(Huber-Suhner). They can be used to synchronise the on-board optional clock
circuitry to an external system clock domain.
4.2.1.4 PCI Express
PCI Express (x1 and x4) connectors are horizontal connectors (female) and
manufactured by Molex. Connections between 2 boards or between one board and a
host can be implemented using a male-male PCI Molex cable.
FPGAs populated on the SMT166 features two PCI Express blocks, which means that
both express interfaces can be used simultaneously.
The SMT166 will receive a Gen1 PCI Express core (Endpoint with Link speed of
2.5Gbits/s and user clock of 125MHz) but has the capabilities of receiving a Gen2
version of the core (Endpoint with Link speed of 5GBits/s and user clock of
250MHz).
Typical cable examples are shown here:
Figure 4 - PCIe cables.
The 4-lane Express core can be implemented using PCIE_X0Y1.
Product Specification SMT166 Page 13 of 44 Last Edited: 17/06/2014 16:12:00