SH7785 Datasheet, PDF (332/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

10. Interrupt Controller (INTC)
(2) Interrupt Source Register (Not affected by Mask Setting) (INT2A0)
INT2A0 is a 32-bit read-only register that indicates the interrupt sources of on-chip peripheral
modules. Even if an interrupt is masked by the interrupt mask register, the corresponding bit in
INT2A0 is set (further interrupt operation is not performed for the corresponding bit). Use
INT2A1 instead if the bits for the interrupt sources masked by the interrupt mask registers should
not be set.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
———
Initial value: 0
0
0 —————————————
R/W: R R R R R R R R R R R R R R R R
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Initial value: — — — — — — — — — — — — — — — —
R/W: R R R R R R R R R R R R R R R R
Table 10.6 shows the correspondence between bits in INT2A0 and the interrupt sources.
Table 10.6 Correspondence between Bits in INT2A0 and Interrupt Sources
Initial
Bit Value
31 to All 0
29
28 Undefined
27 Undefined
26 Undefined
25 Undefined
24 Undefined
23 Undefined
22 Undefined
R/W Source
R Reserved
R GDTA
R DU
R SSI
channel 1
R SSI
channel 0
R GPIO
R FLCTL
R MMCIF
Function
Description
These bits are always read
as 0. The write value
should always be 0.
GDTA interrupt source
indication
DU interrupt source
indication
SSI channel 1 interrupt
source indication
SSI channel 0 interrupt
source indication
GPIO interrupt source
indication
FLCTL interrupt source
indication
These bits indicate the
interrupt source of each
peripheral module that is
generating an interrupt.
(INT2A0 is not affected by the
setting of the interrupt mask
register).
0: No interrupt
1: An interrupt has occurred
Note: Interrupt sources can
also be identified by
directly reading the
INTEVT code. In this
case, reading from this
register is not required.
MMCIF interrupt source
indication
Rev.1.00 Jan. 10, 2008 Page 302 of 1658
REJ09B0261-0100