Elements values convention: 000ZZZZZ0XXYYYYYb

• YYYYY : Interrupt source position in the XX register (5 bits)
• XX : Interrupt source register (2 bits)
  • 01: CR1 register
  • 10: CR2 register
  • 11: CR3 register
• ZZZZZ : Flag position in the ISR register(5 bits)