BF533 Cannot Boot with BMODE is 00

Recently our product using BF533 has a production failure rate at 75% which cannot startup, BF533 is Boot from external 256KB SRAM,by measuring the signals, we find the AMS0 comes out of BF533 is incorrect after initialization

We debug using GHS, and find the software stop at the startup even cannot enter int main( ), see the following for details.

So do you know which situation can cause such hardware breakpoint ?