Section 9 Interrupt Controller (INTC)
Rev. 1.00 Oct. 01, 2007 Page 265 of 1956
REJ09B0256-0100
To prevent incorrect writing, this register can only be written to with bits 31 to 24 set to H'A5.
16
17
18
19
20
21
22
23
24
25
26
27
28
29
31
30
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
UIMASK
R
R
R
R
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
Bit:
Initial value:
R/W:
Bit:
Initial value:
R/W:
−
− −
−
−
− −
−
− − − −
− − − −
−
− − − −
− − −
−
− − −
Bit Bit
Name
Initial
Value R/W Description
31 to 24 —
H'00
R/W
To write a value to bits 7 to 4, write H'A5 to them.
These bits are always read as 0.
23 to 8
—
All 0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
7 to 4
UIMASK
H'0
R/W
Interrupt Mask Level
Masks interrupts whose priority levels are lower than
the level set in the UIMASK bit.
3 to 0
—
All 0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
Procedure for Using User Interrupt Mask Level Register
This function is used to save time by disabling interrupts whose priorities are low when a high
priority interrupt is processed in the device driver.
Setting the interrupt mask level in USERIMASK disables interrupts having an equal or lower
priority level than the specified mask level. This function can disable less-urgent interrupts in a
task (such as device driver) operating in user mode to accelerate urgent processing.
USERIMASK is allocated to a different 64-Kbyte page than where the other INTC registers are
allocated. When accessing this register in user mode, translate the address through the MMU. In
the system that uses a multitasking OS, processes that can access USERIMASK must be
controlled by using memory protection functions of the MMU. When terminating the task or
switching to another task, be sure to clear USERIMASK to 0 before quitting the task. If the
UIMASK bits are left set to a non-zero value, interrupts which are not higher in priority than the
Содержание SH7763
Страница 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Страница 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Страница 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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Страница 2026: ...SH7763 Hardware Manual ...