Section 10 Interrupt Controller (INTC)
Rev.1.00 Dec. 13, 2005 Page 256 of 1286
REJ09B0158-0100
Bit Name
Initial
Value R/W
Description
25
NMIB
0
R/W
NMI Block Mode
Selects whether an NMI interrupt is held until the BL bit
in SR is cleared to 0 or detected immediately when the
BL bit in SR of the CPU is set to 1.
0: An NMI interrupt is held when the BL bit in SR is set
to 1 (initial value)
1: An NMI interrupt is not held when the BL bit in SR is
set to 1
Note: If interrupts are accepted with the BL bit in SR
set to 1, information saved for any previous
exception (SSR, SPC, SGR, and INTEVT) is lost.
24
NMIE
0
R/W
NMI Edge Select
Selects whether an interrupt request signal to the NMI
pin is detected at the rising edge or the falling edge.
0: An interrupt request is detected at the falling edge of
NMI input (initial value)
1: An interrupt request is detected at the rising edge of
NMI input
Note: NMI interrupt is not detected for at least six bus
clock cycles after modification of this bit.
23
IRLM0
0
R/W
IRL Pin Mode 0
Selects whether IRQ/
IRL3
to IRQ/
IRL0
are used as 4-
bit level-encoded interrupt requests or as four
independent interrupts.
0: IRQ/
IRL3
to IRQ/
IRL0
are used as the 4-bit level-
encoded interrupt requests (IRL [3:0] interrupt; initial
value)
1: IRQ/
IRL3
to IRQ/
IRL0
are used as four independent
interrupt requests (IRQ [n] interrupt; n = 3 to 0)
Note: The level-encoded IRL interrupt is not detected
unless the same pin levels are sampled in four
consecutive bus clock cycles.
Содержание SH7780 Series
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Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
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Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
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