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2396420_en-US
2396420_en-US
Hi Team,
We are facing a reset issue in the SBC section.
During initial testing, I assembled only the NXP Semiconductors MFS2633HMDB2AD SBC section and checked the reset output. The reset line was HIGH, and the IC was working properly.
After assembling the MCU and other related components, the PMIC reset line is always LOW, and all associated reset signals are being pulled LOW.
When I connect the JTAG debugger, the reset line becomes HIGH and the system enters debug mode successfully.
Additional observations:
Removed MCU reset line using a 0Ω resistor.
MCU reset line is HIGH.
PMIC reset line remains LOW.
FS26 is working correctly in debug mode.
Without JTAG connection, the PMIC reset output remains LOW.
It appears that the issue occurs only after MCU integration. The SBC section works correctly when tested independently, but after MCU connection, the PMIC reset sequence is not releasing.
Thanks.