Xilinx Kintex UltraScale FPGA KCU1250 Getting Started Manual page 10

GTH Transceiver Clock Connections
1. See Figure 1-2
reference clock inputs.
2. Connect these cables to the SuperClock-2 module as follows:
CLK0_P coax cable → SMA connector J7 (CLKOUT1_P) on the SuperClock-2 module
°
CLK0_N coax cable → SMA connector J8 (CLKOUT1_N) on the SuperClock-2 module
°
Any one of the five differential outputs from the SuperClock-2 module can be used to
Note:
source the GTH reference clock. CLKOUT1_P and CLKOUT1_N are used here as an example.
GTH TX/RX Loopback Connections
1. See Figure 1-2
receivers (RX0, RX1, RX2, and RX3) and the four transmitters (TX0, TX1, TX2, and TX3).
2. Use eight SMA female-to-female (F-F) adapters
receive cables as shown in
TX0_P → SMA F-F Adapter → RX0_P
°
TX0_N → SMA F-F Adapter → RX0_N
°
TX1_P → SMA F-F Adapter → RX1_P
°
TX1_N → SMA F-F Adapter → RX1_N
°
TX2_P → SMA F-F Adapter → RX2_P
°
TX2_N → SMA F-F Adapter → RX2_N
°
TX3_P → SMA F-F Adapter → RX3_P
°
TX3_N → SMA F-F Adapter → RX3_N
°
RECOMMENDED:
wrench; however, do not over-tighten the SMAs.
X-Ref Target - Figure 1-6
KCU1250 IBERT Getting Started Guide
UG1061 (v2017.4) December 20, 2017
to identify the P and N coax cables that are connected to the CLK0
to identify the P and N coax cables that are connected to the four
Figure 1-7:
To ensure good connectivity, it is recommended that the adapters be secured with a
Figure 1-6: SMA F-F Adapter
www.xilinx.com
Chapter 1: KCU1250 IBERT Getting Started Guide
(Figure 1-6) to connect the transmit and
10
Send Feedback