AR# 66882

描述

If intermittent issues with the Zynq UltraScale+ MPSoC ZCU102 Evaluation Kit at shutdown / power cycle / power are seen, it might be related to a regulator startup issue.

解决方案

The Zynq UltraScale+ MPSoC ZCU102 Evaluation Kit uses power controllers and regulators from Maxim Integrated.

For the ZCU102, Maxim identified the XML initial loop coefficients for L1 and Cout were not optimum and could cause oscillatory shutdown, resulting in issues seen on the ZCU102 at power up, shutdown, or power cycling events.

The power LEDs on the ZCU102, such as DS3, DS4, DS5, DS6, DS7, DS8, and DS13 might not light upon power up.

An updated XML file is available with optimized initial / default boot coefficients which resolves this issue.

Further information on this issue, and the required files can be found in (Xilinx Answer 66811).

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