Voltage Monitoring; Clock Generation; Heat Sink Type; Voltage Monitoring Outputs - Enclustra Mars XU3 User Manual

module PCB. With additional user configured gap pads, it is possible to cool other components on board
as well. For details, please refer to the Enclustra website.
Table 15 lists the heat sink and thermal pad part numbers that are compatible with the Mars XU3 SoC mod-
ule. Details on these parts and additional information that may assist in selecting a suitable heat sink for the
Mars XU3 SoC module can be found in the Enclustra Modules Heat Sink Application Note [18].
Product Name Package Name
Mars XU3 SBVA484 [24]
Table 15: Heat Sink Type
Please note that the adhesive heatsink part is recommended only for prototyping purposes. In cases where
the module in used in environments subject to vibrations, a heat sink with mounting screws or clips may be
required for optimal fixation.
Warning!
Depending on the user application, the Mars XU3 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

Some pins on the module connector on the Mars XU3 SoC module are marked as VMON. These are volt-
age 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 16 presents the VMON pins on the Mars XU3 SoC module.
Pin Name Module Connector Pin
VMON_INT 198
Table 16: Voltage Monitoring Outputs
2.12

Clock Generation

A 33.33 MHz oscillator is used for the Mars XU3 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. The enable signals for these two oscillators are connected to MIO pins 24 and 25. Please refer to
Section 2.9.7 for details on the MIO connections.
D-0000-432-001
Enclustra ATS
Heat Sink Heat Sink
HS-MA3 ATS-52190G-C1-R0
Connection Description
VCC_INT PL core voltage (default)/MPSoC battery volt-
age (assembly option)
25 / 52
t-Global
Thermal Pad
TG6050-20-20-1
Version 04, 25.07.2019