TDA3MV: The bootstrap register is inconsistent with the settings

Hi Team,

The customer designed a TDA3MV board by referring to TDA3XEVM. There is a problem with the curing start. After debugging, it is found that the boot_strap value read each time is inconsistent with the value set by the DIP switch. and now the ctrl_core_bootstrap read by the debug interface is always 0x80b8. Even if he shorts the pin directly to 3.3V or ground, the read value is always the same. Except for sysboot7, all 16 pins of sysboot are only connected with the DIP switch and S29GL512. sysboot7 connects to D2 connection of W25Q64. The power-on sequence has also been tested and there is no problem. What else will affect the reading of this value?

Thanks,

Annie