Board Components and Operations
UG0747 User Guide Revision 1.0
15
The following figure shows the XCVR1 and 3 interface of the PolarFire Evaluation Board.
Figure 8 •
XCVR1 and XCVR3 Interface
4.3.3
XCVR2 Interface
The XCVR2 interface has four lanes connected as follows:
•
Lane 0 is connected to SMA connectors.
•
TX pad > trace > AC coupling > trace > SMA connectors (J41 (P) and J42 (N))
•
RX pad > trace > via (to Top layer) > trace > SMA connectors (J37 (P) and J38 (N))
•
Lane 1 is connected to the SFP+ connector.
•
TX pad > bottom trace > via (to Top layer) > SFP+ connector
•
RX pad > bottom trace > via (to Top layer) > SFP+ connector
•
Lanes 2 and 3 are used for loopback testing. This path is routed between the TX and RX pads with
trace and two vias.
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