Warning!
Depending on the user application, the XU1 SoC module may consume more power than
can be dissipated without additional cooling measures; always make sure the MPSoC is adequately
cooled by installing a heat sink and/or providing air flow.
2.11.7
Voltage Monitoring
Several pins on the module connector on the XU1 SoC module are marked as VMON. These are
voltage monitoring outputs that may be used to measure some of the on-board voltages. Examples of such
monitoring circuits are available on Enclustra base boards.
It is not allowed to draw power from the voltage monitoring outputs.
Table 20 presents the VMON pins on the XU1 SoC module.
Pin Name
Module Connector Pin
Connection
Description
VMON_INT
A-102
VCC_INT
PL core voltage
VMON_1V2_VBAT
B-8
VCC_1V2
1.2 V on-board voltage (default)/MPSoC
battery voltage (assembly option)
VMON_PSINT
C-8
VCC_PSINT
PS core voltage
VMON_0V9
B-167
VCC_0V9
0.9 V on-board voltage
VMON_1V8
B-168
VCC_1V8
1.8 V on-board voltage
Table 20: Voltage Monitoring Outputs
2.12
Clock Generation
A 33.33 MHz oscillator is used for the XU1 SoC module clock generation; the 33.33 MHz clock is
fed to the PS.
A 100 MHz LVDS oscillator and a 27 MHz CMOS oscillator provide reference clock inputs to the PS GTR bank
505. A 24 MHz clock and a 25 MHz clock are used for the USB PHYs and Ethernet PHYs respectively. The
crystal pads for the MPSoC RTC are connected to a 32.768 kHz oscillator on the XU1 SoC module.
Table 21 describes the clock connections to the MPSoC device.
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Version 13, 15.08.2019
