LM3S5737 Datasheet, PDF (118/833 Pages) Texas Instruments – Stellaris® LM3S5737 Microcontroller

Cortex-M3 Peripherals
Register 14: Interrupt 0-3 Priority (PRI0), offset 0x400
Register 15: Interrupt 4-7 Priority (PRI1), offset 0x404
Register 16: Interrupt 8-11 Priority (PRI2), offset 0x408
Register 17: Interrupt 12-15 Priority (PRI3), offset 0x40C
Register 18: Interrupt 16-19 Priority (PRI4), offset 0x410
Register 19: Interrupt 20-23 Priority (PRI5), offset 0x414
Register 20: Interrupt 24-27 Priority (PRI6), offset 0x418
Register 21: Interrupt 28-31 Priority (PRI7), offset 0x41C
Register 22: Interrupt 32-35 Priority (PRI8), offset 0x420
Register 23: Interrupt 36-39 Priority (PRI9), offset 0x424
Register 24: Interrupt 40-43 Priority (PRI10), offset 0x428
Register 25: Interrupt 44-47 Priority (PRI11), offset 0x42C
Note: This register can only be accessed from privileged mode.
The PRIn registers provide 3-bit priority fields for each interrupt. These registers are byte accessible.
Each register holds four priority fields that are assigned to interrupts as follows:
PRIn Register Bit Field
Bits 31:29
Bits 23:21
Bits 15:13
Bits 7:5
Interrupt
Interrupt [4n+3]
Interrupt [4n+2]
Interrupt [4n+1]
Interrupt [4n]
See Table 2-9 on page 81 for interrupt assignments.
Each priority level can be split into separate group priority and subpriority fields. The PRIGROUP
field in the Application Interrupt and Reset Control (APINT) register (see page 126) indicates the
position of the binary point that splits the priority and subpriority fields.
These registers can only be accessed from privileged mode.
Interrupt 0-3 Priority (PRI0)
Base 0xE000.E000
Offset 0x400
Type R/W, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
INTD
reserved
INTC
reserved
Type R/W
R/W
R/W
RO
RO
RO
RO
RO
R/W
R/W
R/W
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
INTB
reserved
INTA
reserved
Type R/W
R/W
R/W
RO
RO
RO
RO
RO
R/W
R/W
R/W
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
118
November 17, 2011
Texas Instruments-Production Data