Device Register Information:
Status Register:
  Bit        Name                            Settings
   6         Quad Enable                     1: Enabled (default) (cannot be changed)
  5-2        BP[3:0]                         See Protected Area table

Configuration Register:
  Bit        Name                            Settings:    
   3         TB (top/bottom select)          0: Top area protected(default), 1: Bottom area protected

Security Register:
  Bit        Name                            Settings:    
   1         LDSO (lock down security OTP)   0: not lock down(default), 1: lock down