r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 330

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

10. Interrupt Controller (INTC)
3. Branch to the device driver.
4. In the device driver operating in user mode, set the UIMASK bits to mask the B-type
5. Process more urgent interrupts in the device driver.
6. Clear the UIMASK bit to 0 and return from the processing by the device driver.
10.3.3
(1)
INT2PRI0 to INT2PRI9 are 32-bit readable/writable registers that set priority levels (31 to 0) of
the on-chip peripheral module interrupts. These registers are initialized to H'0000 0000 by a reset.
These registers can set the priority of each interrupt source in 30 levels (H'00 and H'01 mask the
interrupt request) by the 5-bit field.
Table 10.5 shows the correspondence between interrupt request sources and bits in INT2PRI0 to
INT2PRI9.
Rev.1.00 Jan. 10, 2008 Page 300 of 1658
REJ09B0261-0100
Initial value:
Initial value:
interrupts.
R/W:
R/W:
Interrupt Priority Registers (INT2PRI0 to INT2PRI9)
Bit:
Bit:
On-chip Module Interrupt Priority Registers
31
15
⎯
⎯
R
R
0
0
30
⎯
14
⎯
R
R
0
0
29
⎯
13
⎯
R
R
0
0
R/W
R/W
28
12
0
0
R/W
R/W
27
11
0
0
R/W
R/W
26
10
0
0
R/W
R/W
25
0
9
0
R/W
R/W
24
0
8
0
23
⎯
⎯
R
R
0
7
0
22
⎯
⎯
R
R
0
6
0
21
⎯
⎯
R
R
0
5
0
R/W
R/W
20
0
4
0
R/W
R/W
19
0
3
0
R/W
R/W
18
0
2
0
R/W
R/W
17
0
1
0
R/W
R/W
16
0
0
0