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→XCN15034 and power-off sequence
(1) This step is not mandatory and CB_PWR_GOOD can be left floating. CB_PWR_GOOD is provided to prevent, if necessary, Bora's PSU to turn on during ramp of carrier board 3.3VIN rail. Depending on carrier board's PSU design, this may lead to undesired glitches during ramp-up.
=== XCN15034 and power-off sequence ===
On 29th September 2015 Xilinx released a Product Change Notice indicating new power on/off requirements about Zynq components.
A specific analysis has been undertaken with the help of Xilinx technical support to verify the compliance of Bora with respect to the new requirements. This activity has led to the following recommendation: in order to prevent situations that might not fulfill such requirements, 3.3VIN off ramp speed must not exceed 50 V/ms.
