Figure 19: ZCU208 Cooling Fan Circuit
VADJ_FMC Power Rail
The ZCU208 evaluaon board implements the ANSI/VITA 57.1 secon 5.5.1 IPMI support
funconality. The power control of the VADJ_FMC power rail is managed by the U38 system
controller. This rail powers the FMCP HSPC (J28) VADJ pins, as well as the ZU48DR HP banks 66
and 67. The valid values of the VADJ_FMC rail are 1.2V, 1.5V, and 1.8V.
At power on, the system controller detects if an FMC module is installed on J28:
• If no card is aached to the FMCP connector, the VADJ voltage is set to 1.8V.
• When an FMC card is aached, its IIC EEPROM is read to nd a VADJ voltage supported by
both the ZCU208 board and the FMC module, within the available choices of 0.0V, 1.2V, 1.5V,
and 1.8V.
• If no valid informaon is found in an FMC card IIC EEPROM, the VADJ_FMC rail is set to 0.0V.
The system controller user interface allows the FMC IPMI roune to be overridden and an
explicit value can be set for the VADJ_FMC rail. Override mode is useful for FMC mezzanine
cards that do not contain valid IPMI EPROM data dened by the ANSI/VITA57.1 specicaon.
ZCU208 MSP430 System Controller
[Figure 2, callout 19]
The ZCU208 board includes an on-board MSP430 (U38) with integrated power advantage
demonstraon and system controller rmware. A host PC resident system controller board user
interface is provided on the ZCU208 documentaon website. The board user interface allows the
query and control of select programmable features such as clocks, FMC funconality, and power
system parameters. The ZCU208 website also includes the ZCU208 System Controller GUI Tutorial
(XTP_TBD) and ZCU208 Soware Install and Board Setup Tutorial (XTP_TBD).
These steps briey summarize these instrucons.
Chapter 3: Board Component Descriptions
UG1410 (v1.0) July 8, 2020 www.xilinx.com
ZCU208 Board User Guide 58
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