Interrupt-Priority-Level Setting Register 00 (Intpri00) (Sh7750R Only) - Hitachi SH7750 Hardware Manual

Sh7750 series superh risc engine
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Bit 7—IRL Pin Mode (IRLM): Specifies whether pins IRL3–IRL0 are to be used as level-
encoded interrupt requests or as four independent interrupt requests.
Bit 7: IRLM
0
1
Bits 13 to 10 and 6 to 0—Reserved: These bits are always read as 0, and should only be written
with 0.
19.3.3

Interrupt-Priority-Level Setting Register 00 (INTPRI00) (SH7750R Only)

The interrupt-priority-level setting register 00 (INTPRI00) sets the priority levels (levels 15–0) for
the on-chip peripheral module interrupts. INTPRI00 is a 32-bit readable/writable register. It is
initialized to H'00000000 by a reset, but is not initialized when the device enters standby mode.
Bit:
31
30
Initial value:
0
0
R/W:
R
R
Bit:
15
14
Initial value:
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
Table 19.7 shows the correspondence between interrupt request sources and the bits in INTPRI00.
Rev. 6.0, 07/02, page 764 of 986
Description
IRL pins used as level-encoded interrupt requests
IRL pins used as four independent interrupt requests (level-sense IRQ
mode)
29
28
27
26
0
0
0
0
R
R
R
R
13
12
11
10
0
0
0
0
25
24
23
22
0
0
0
0
R
R
R
R
9
8
7
6
0
0
0
0
R
R
(Initial value)
21
20
19
18
0
0
0
0
R
R
R
R
5
4
3
2
0
0
0
0
R
R
R
R
17
16
0
0
R
R
1
0
0
0
R
R

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