SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 162

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

Find the IPR number and byte offset for interrupt N as follows:
11.20.8
• INTID
Interrupt ID of the required SGI, in the range 0-239. For example, a value of b000000011 specifies interrupt IRQ3.
162
162
• the corresponding IPR number, M, is given by M = N DIV 4
• the byte offset of the required Priority field in this register is N MOD 4, where:
– byte offset 0 refers to register bits[7:0]
– byte offset 1 refers to register bits[15:8]
– byte offset 2 refers to register bits[23:16]
– byte offset 3 refers to register bits[31:24].
31
23
15
7
SAM3X/A
SAM3X/A
Software Trigger Interrupt Register
30
22
14
6
Write to the STIR to generate a Software Generated Interrupt (SGI). See the register summary
in
When the USERSETMPEND bit in the SCR is set to 1, unprivileged software can access the
STIR, see
Only privileged software can enable unprivileged access to the STIR.
The bit assignments are:
Table 11-27 on page 153
“System Control Register” on page
29
21
13
5
Reserved
28
20
12
4
for the STIR attributes.
Reserved
Reserved
INTID
27
19
11
3
174.
26
18
10
2
25
17
9
1
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
INTID
24
16
8
0