Other Parts Discussed in Thread: LP87702,
- 发现当sop配置为101时 bootloader无法正常工作。1843收到串口00,回复是00。而不是正常的回复。请问为什么?导致此现象是否与pmic控制的复位信号有关?正常回复是00 04 cc 00 cc
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需要电源芯片提供下面的上电时序。
5.10.1 Power Supply Sequencing and Reset Timing
https://www.ti.com/lit/ds/symlink/iwr1843.pdf
LP87702具体的工作原理请到电源论坛咨询。
https://e2echina.ti.com/support/power-management/f/power-management-forum