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7.6.2.9 System Handler Priority Register
Each exception is provided with eight bits of a System Handler Priority Register.
The following shows the addresses of the System Handler Priority Registers corresponding to each excep-
tion.
31
24 23
16 15
8 7
0
0xE000_ED18
PRI_7
PRI_6
(Usage Fault)
PRI_5
(Bus Fault)
PRI_4
(Memory Management)
0xE000_ED1C
PRI_11
(SVCall)
PRI_10
PRI_9
PRI_8
0xE000_ED20
PRI_15
(SysTick)
PRI_14
(PendSV)
PRI_13
PRI_12
(Debug Monitor)
The number of bits to be used for assigning a priority varies with each product. This product uses three
bits for assigning a priority.
The following shows the fields of the System Handler Priority Registers for Memory Management,
Bus Fault and Usage Fault. Unused bits return "0" when read, and writing to unused bits has no effect.
31
30
29
28
27
26
25
24
bit symbol
PRI_7
-
-
-
-
-
After reset
0
0
0
0
0
0
0
0
23
22
21
20
19
18
17
16
bit symbol
PRI_6
-
-
-
-
-
After reset
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
bit symbol
PRI_5
-
-
-
-
-
After reset
0
0
0
0
0
0
0
0
7
6
5
4
3
2
1
0
bit symbol
PRI_4
-
-
-
-
-
After reset
0
0
0
0
0
0
0
0
Bit
Bit Symbol
Type
Function
31-29
PRI_7
R/W
Reserved
28-24
−
R
Read as 0.
23-21
PRI_6
R/W
Priority of Usage Fault
20-16
−
R
Read as 0.
15-13
PRI_5
R/W
Priority of Bus Fault
12-8
−
R
Read as 0.
7-5
PRI_4
R/W
Priority of Memory Management
4-0
−
R
Read as 0.
TMPM3V6/M3V4
Page 115
2019-02-06
Summary of Contents for TMPM3V4
Page 1: ...32 Bit RISC Microcontroller TX03 Series TMPM3V6 M3V4 ...
Page 2: ... 2019 Toshiba Electronic Devices Storage Corporation ...
Page 7: ...Revision History Date Revision Comment 2019 02 06 1 First Release ...
Page 8: ......
Page 22: ...xiv ...
Page 52: ...TMPM3V6 M3V4 3 Processor Core 3 6 Exclusive access Page 30 2019 02 06 ...
Page 148: ...TMPM3V6 M3V4 7 Exceptions 7 6 Exception Interrupt Related Registers Page 126 2019 02 06 ...
Page 178: ...TMPM3V6 M3V4 9 Input Output port 9 2 Block Diagrams of Ports Page 156 2019 02 06 ...
Page 354: ...TMPM3V6 M3V4 14 Synchronous Serial Port SSP 14 6 Frame Format Page 332 2019 02 06 ...
Page 419: ...TMPM3V6 M3V4 Page 397 2019 02 06 ...
Page 462: ...TMPM3V6 M3V4 21 Watchdog Timer WDT 21 5 Control register Page 440 2019 02 06 ...
Page 544: ......