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R01UH0336EJ0102 Rev.1.02
Page 172 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 4 Interrupt Functions
4.3.11
INTSTR0B – Error Interrupt Source Storage Register
This register identifies whether an interrupt request is generated or not from an
interrupt source that is switchable between FE-level and EI-level operation.
An individual bit is set by either the generation of an interrupt from the
corresponding source or writing to the corresponding bit in the INTSTS0B
register.
An individual bit is cleared by either writing 1 to the corresponding bit in the
error interrupt source flag clearing trigger register (INTSTC0B) or a reset.
Access
This register is read-only and may be read in 1- or 8-bit units.
Address
FF83 A004
H
Initial value
00
H
A reset from any source will initialize the bits.
Caution 1.
When the INTSTR0B.INTISTF1 or 0 bit is 1, the given interrupt source is
masked to avoid the generation of multiple interrupts. With INTCLMA2,
INTCLMA1 and INTWDTA0NMI, further interrupts will not be generated once
one interrupt has been generated and until a reset is input. Clear the bit if the
generation of multiple interrupts or a new interrupt is required.
Caution 2. When a CPU comparison error occurs, an SGA status register (specifically the
SGAmESSTR0.SGAmSSE005 bit) must be read to determine whether the
error has occurred because in some cases the error indicator will not be set in
register INTSTR0B (interrupt error source storage register).
7
6
5
4
3
2
1
0
INTSTR0B
0
0
INTISTF5
INTISTF4
0
INTISTF2
INTISTF1
INTISTF0
R
R
R
R
R
R
R
R
Bit Position
Bit Name
Function
5
INTISTF5
0: The INTCLMA2 interrupt is not requested.
1: The INTCLMA2 interrupt is requested.
4
INTISTF4
0: The INTCLMA1 interrupt is not requested.
1: The INTCLMA1 interrupt is requested.
2
INTISTF2
0: The INTWDTA0NMI interrupt is not requested.
1: The INTWDTA0NMI interrupt is requested.
1
INTISTF1
0: The INTISG interrupt is not requested.
1: The INTISG interrupt is requested.
The INTISG interrupt signal is masked.
0
INTISTF0
0: The INTCME interrupt is not requested.
1: The INTCME interrupt is requested.
The INTCME interrupt signal is masked.
Содержание V850 Series
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