Attach The Gtx Quad Connector - Xilinx KC724 IBERT Getting Started Manual

X-Ref Target - Figure 1-2
The SuperClock-2 module provides LVDS clock outputs for the GTX transceiver reference
clocks in the IBERT demonstrations.
SMA connectors on the clock module which can be connected to the reference clock cables.
Note:
board.
X-Ref Target - Figure 1-3
SI570_CLK_P
SI570_CLK_N
Figure 1-3: SuperClock-2 Module Output Clock SMA Locations
The four SMA pairs labeled CLKOUT provide LVDS clock outputs from the Si5368 clock
multiplier/jitter attenuator device on the clock module. The SMA pair labeled Si570_CLK
provides LVDS clock output from the Si570 programmable oscillator on the clock module.
Note:
SuperClock-2 module.
For the GTX IBERT demonstration, the output clock frequencies are preset to 125.000 MHz.
For more information regarding the SuperClock-2 module, refer to UG770,
HW-CLK-101-SCLK2 SuperClock-2 Module User Guide.

Attach the GTX Quad Connector

Before connecting the BullsEye cable assembly to the board, firmly secure the blue
elastomer seal provided with the cable assembly to the bottom of the connector housing if
KC724 IBERT Getting Started Guide
UG930 (v1.0) October 23, 2012
A
GTX Connector Pad
Figure 1-2: A – GTX Connector Pad. B – GTX Connector Pinout
The image in Figure 1-3 is for reference only and might not reflect the current revision of the
CLKOUT1_P
CLKOUT1_N
The Si570 oscillator does not support LVDS output on the Rev B and earlier revisions of the
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Running the GTX IBERT Demonstration
B
P
P
P
P
P
GTX Connector Pinout
Figure 1-3 shows the locations of the differential clock
CLKOUT2_P CLKOUT3_P
CLKOUT2_N CLKOUT3_N
GTX
P
N
N
N P
N
P
N
N
P
N
N
P
N
N
UG930_c1_02_101612
CLKOUT4_P
CLKOUT4_N
UG930_c1_03_061412
9