Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 301

Powerquicc family

Table of Contents

SIU Interrupt Processing

shows the general flow of SIU interrupt processing.

Freescale Semiconductor

Table 10-7. Priority of SIU Interrupt Sources

Priority Level

Interrupt Source

SIU interrupt occurs

Set bit in SIPEND

Bit set in SIMASK

Assert external interrupt

Figure 10-8. SIU Interrupt Processing

MPC885 PowerQUICC Family Reference Manual, Rev. 2

Internal Level 0

Internal Level 1

Internal Level 2

Internal Level 3

Internal Level 4

Internal Level 5

Internal Level 6

Internal Level 7

Bit not set in SIMASK

System Interface Unit

Interrupt Code

(SIVEC[INTC])