Advertisement
5.3
Register Descriptions
The interrupt controller has the following registers. For details on the system control register
(SYSCR), see section 3.2.2, System Control Register (SYSCR), and for details on the IRQ sense
port select registers (ISSR16 and ISSR), see section 8.3.1, IRQ Sense Port Select Register 16
(ISSR16), IRQ Sense Port Select Register (ISSR).
• Interrupt control registers A to D (ICRA to ICRD)
• Address break control register (ABRKCR)
• Break address registers A to C (BARA to BARC)
• IRQ sense control registers (ISCR16H, ISCR16L, ISCRH, and ISCRL)
• IRQ enable registers (IER16 and IER)
• IRQ status registers (ISR16 and ISR)
5.3.1
Interrupt Control Registers A to D (ICRA to ICRD)
The ICR registers set interrupt control levels for interrupts other than NMI.
The correspondence between interrupt sources and ICRA to ICRD settings is shown in table 5.2.
Bit
Bit Name
7 to 0
ICRn7 to
IRCn0
[Legend]
n:
A to D
Initial
Value
R/W
Description
All 0
R/W
Interrupt Control Level
0: Corresponding interrupt source is interrupt control level
0 (no priority)
1: Corresponding interrupt source is interrupt control level
1 (priority)
Section 5 Interrupt Controller
Rev. 1.00 Mar. 12, 2008 Page 79 of 1178
REJ09B0403-0100
Advertisement
