The PS_ERROR_OUT - LED indicator illimuniates, then it typically signifies a boot failure (an accidental loss of power, a hardware error, not booting etc) on the SOM. For a comprehensive analysis of error states and LED identifier, please refer to “MPSoC Configuration & Status” in the SOM Hardware User Guide.
Boot mode indicators: The green LED illimuniates in JTAG mode and other boot modes mode the LED won’t illimuniates for proper operation. If LED illimuniates in other boot mode the board is not in proper opertion like not booting.
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Please find the detailed product information here:
Zynq™ UltraScale+™ ZU7/ZU5/ZU4 MPSoC System on Module