Xilinx ZCU1285 User Manual page 24

RFSoC Processor Reference Clock
A free-running 33.3333333 MHz clock (U12) is the clock source for the RFSoC processor
(PS_REF_CLK).
300 MHz LVDS Oscillator
A 300 MHz LVDS oscillator U145 (SiTime SIT9107AI-243N25E300.0000) connects to global
clock (GC) pins on the RFSoC. The following table lists the RFSoC pin connections to the LVDS
oscillator.
Table 7: LVDS Oscillator GC Connections
Pin Function
AP22 SYSTEM
CLOCK_P
AR22 SYSTEM
CLOCK_N
Differential SMA Pin Inputs
Two pairs of SMA connectors (callout 49,
to global clock (GC) pins on the RFSoC. The GC pins are connected to the SMA connectors as
shown in the following table.
Table 8: Differential SMA Clock Connections
Pin Function
AP26 USER CLOCK_1_P
AR26 USER CLOCK_1_N
AT23 USER CLOCK_2_P
AT24 USER CLOCK_2_N
User LEDs
Eight active-High LEDs, DS22 through DS26, and DS46 through DS48 (callout 43,
2: Board Component
used to indicate status or other functions. Their pinout is listed in the following table.
UG1348 (v1.0) July 16, 2019
ZCU1285 Board User Guide
RFSoC (U1)
I/O
Direction
Standard
Input LVDS
Input LVDS
Figure 2: Board Component
RFSoC (U1)
Direction
Input
Input
Input
Input
Locations), are connected to GPIO pins on the RFSoC. These LEDs can be
Chapter 1: ZCU1285 Board Features and Operation
Schematic
Net Name
Pin
LVDS_OSC_P 4
LVDS_OSC_N 5
Locations) provide access
Schematic Net
Name
IOSTANDARD
LVDS CLK_DIFF_1_P
LVDS CLK_DIFF_1_N
LVDS CLK_DIFF_2_P
LVDS CLK_DIFF_2_N
Send Feedback
Device (U145)
Function Direction
300 MHz LVDS Output
oscillator
300 MHz LVDS Output
oscillator
SMA Connector
J84
J85
J83
J86
Figure
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