Cooling Fan Connector - Xilinx Zynq UltraScale+ ZCU216 User Manual

FMCP Connector J28
[Figure 2, callout 25]
The HSPC connector J28 implements a subset of the full FMCP connectivity:
• 68 single-ended or 34 differential user-defined pairs (34 LA pairs: LA[00:33])
• 8 transceiver differential pairs
• 2 transceiver differential clocks
• 2 differential clocks
• 239 ground and 16 power connections
See the FPGA Mezzanine Card (FMC) VITA 57.4 specification on the
Alliance website for additional information on the FMCP HSPC connector.
The detailed RFSoC connections for the feature described in this section are documented in the
ZCU216 board XDC file, referenced in

Cooling Fan Connector

[Figure 2, near callout 33]
The ZCU216 cooling fan circuit is shown in the figure below.
The ZCU216 uses the Infineon MAX6643 (U50) fan controller, which autonomously controls the
fan speed by controlling the pulse width modulation (PWM) signal to the fan based on the die
temperature sensed via the FPGA's DXP and DXN pins. The fan rotates slowly (acoustically quiet)
when the RFSoC is cool and rotates faster as the FPGA heats up (acoustically noisy). The fan
speed (PWM) versus the RFSoC die temperature algorithm along with the over temperature set
point and fan failure alarm mechanisms are defined by the strapping resistors on the MAX6643
device. The over temperature and fan failures alarms can be monitored by any available
processor in the RFSoC by polling the I2C expander U15 on the I2C0 bus. See the MAX6643
data sheet on the
implementation on this board.
Note: At initial power On, it is normal for the fan controller to energize at full speed for a few seconds.
UG1390 (v1.1) July 10, 2020
ZCU216 Board User Guide
Appendix B: Xilinx Design
Maxim Integrated Circuits
Chapter 3: Board Component Descriptions
Constraints.
website for more information on the device circuit
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