8.5.1.4 INTTREG

The INTTREG register contains the associated interrupt vector number and the new CPU Interrupt Priority Level, which are latched into the Vector Number (VECNUM[7:0]) and Interrupt Level bits (ILR[3:0]) fields in the INTTREG register. The new Interrupt Priority Level is the priority of the pending interrupt.

The interrupt sources are assigned to the IFSx, IECx and IPCx registers in the same sequence as they are listed in Table 8-2. For example, INT0 (External Interrupt 0) is shown as having Vector Number 8 and a natural order priority of 0. Thus, the INT0IF bit is found in IFS0[0], the INT0IE bit in IEC0[0] and the INT0IP[2:0] bits in the first position of IPC0 (IPC0[2:0]).