s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 390

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

INTERRUPT CONTROLLER
INTERRUPT PRIORITY REGISTERS
The interrupt priority registers, INTPRI0–INTPRI5, contain information about which interrupt source is assigned to
the pre-defined interrupt priority field. Each INTPRIn register value determines the priority of the corresponding
interrupt source. The lowest priority value is priority 0, and the highest priority value is priority 20.
The index value of each interrupt source is written to one of the above 21 positions (see Figure 13-4). The
position value then becomes the written interrupt's priority value. The index value of each interrupt source is
listed in Table 13-1.
13-6
INTPRI0
INTPRI1
INTPRI2
INTPRI3
INTPRI4
INTPRI5
INTPRI0
INTPRI1
INTPRI2
INTPRI3
INTPRI4
INTPRI5
Register
31
0
0
0
0
0
0 0
30
0
0
0
0
0
29
0
0
0
0
0
0
Offset Address
28
High Priority
0 0
PRIORITY11
PRIORITY15
PRIORITY19
PRIORITY3
PRIORITY7
0x400C
0x401C
0x4010
0x4014
0x4018
0x4020
27
26
0
25
0 0
Figure 13-4. Interrupt Priority Register (INTPRIn)
Table 13-5. Interrupt Priority Register Overview
24
23
0
0
0
0
0
0
22
0
0
0
0
0
0 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
21
0
0
0
0
0
20
0
PRIORITY10
PRIORITY14
PRIORITY18
PRIORITY2
PRIORITY6
19
Interrupt priority register 0
Interrupt priority register 1
Interrupt priority register 2
Interrupt priority register 3
Interrupt priority register 4
Interrupt priority register 5
0
18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
0 0 0 0 0 0 0 0 0 0 0 0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Description
PRIORITY13
PRIORITY17
PRIORITY1
PRIORITY5
PRIORITY9
0
0
0
0
0
Low Priority
0
0
0
0
0
0
0
0
0
0
PRIORITY12
PRIORITY16
PRIORITY20
PRIORITY0
PRIORITY4
PRIORITY8
0x0F0E0D0C
0x0B0A0908
Reset Value
0x03020100
0x07060504
0x13121110
0x00000014
S3C4510B
Priority
Priority
High
Low