Alinx AXU4EV-E - Page 27

ZYNQ Ultrascale + FPGA Board AXU4EV-E User Manual
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In addition, the VCCIO power supply of BANK65 and BANK66 of
XCZU4EV chip is provided by the carrier board, which is convenient for users
to modify, but the maximum power supply cannot exceed 1.8V.