User manual

System Interface Unit (SIU)
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
4-10 Freescale Semiconductor
relative ordering of the interrupts, but, in general, relative priorities are as shown. A single interrupt
priority number is associated with each table entry.
Note that the group and spread options, shown with YCC entries in Table 4-2, are described in
Section 4.2.2.1, “SCC, FCC, and MCC Relative Priority.”
Table 4-2. Interrupt Source Priority Levels
Priority Level Interrupt Source Description Multiple Events
1 Highest —
2 XSIU1 No (TMCNT,PIT,PCI
1
= Yes)
3 XSIU2 (Grouped) No (TMCNT,PIT,PCI
1
= Yes)
4 XSIU3 (Grouped) No (TMCNT,PIT,PCI
1
= Yes)
5 XSIU4 (Grouped) No (TMCNT,PIT,PCI
1
= Yes)
6 XCC1 Yes
7 XCC2 Yes
8 XCC3 Yes
9 XCC4 Yes
10 XSIU2 (Spread) No (TMCNT,PIT,PCI
1
= Yes)
11 XCC5 Yes
12 XCC6 Yes
13 XCC7 Yes
14 XCC8 Yes
15 XSIU5 (Grouped) No (TMCNT,PIT,PCI
1
= Yes)
16 XSIU6 (Grouped) No (TMCNT,PIT,PCI
1
= Yes)
17 XSIU7 (Grouped) No (TMCNT,PIT,PCI
1
= Yes)
18 XSIU8 (Grouped) No (TMCNT,PIT,PCI
1
= Yes)
19 XSIU3 (Spread) No (TMCNT,PIT,PCI
1
= Yes)
20 YCC1 (Grouped) Yes
21 YCC2 (Grouped) Yes
22 YCC3 (Grouped) Yes
23 YCC4 (Grouped) Yes
24 YCC5 (Grouped) Yes
25 YCC6 (Grouped) Yes
26 YCC7 (Grouped) Yes