ST ST10F276E - Page 123

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UM0404 Interrupt and trap functions
XIR1SET (EB22h) XBUS Reset Value: 0000h
XIR1CLR (EB24h) XBUS Reset Value: 0000h
To enable the interrupt in the interrupt controller, the Interrupt Control Register XP1IC has to
be initialized. The associated interrupt vector is called XP1INT located at address 104h (trap
number 41h).
XP1IC (F18Eh / C7h) ESFR Reset Value: - - 00h
Note: Refer to Section 5.1.3: Interrupt control registers on page 100 for an explanation of the
control fields.
XIR2SEL (EB30h) XBUS Reset Value: 0000h
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IESET[7:0] FLSET[7:0]
WWWWWWWWWWWWWWWW
Bit Function
FLSET.x
Interrupt Flag x SET (x=7...0)
Writing a ‘1’ will set the corresponding bit x in XIR1SEL register.
Writing a ‘0’ has no effect.
IESET.x
Interrupt Enable x SET (x=7...0)
Writing a ‘1’ will set the corresponding bit x in XIR1SEL register.
Writing a ‘0’ has no effect.
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IECLR[7:0] FLCLR[7:0]
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Bit Function
FLCLR.x
Interrupt Flag x CLEAR (x=7...0)
Writing a ‘1’ will clear the corresponding bit x in XIR1SEL register.
Writing a ‘0’ has no effect.
IECLR.x
Interrupt Enable x CLEAR (x=7...0)
Writing a ‘1’ will clear the corresponding bit x in XIR1SEL register.
Writing a ‘0’ has no effect.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
--------XP1IRXP1IE ILVL GLVL
RW RW RW RW
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