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© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
User manual Rev. 02 — 23 May 2005 56 of 133
Philips Semiconductors
UM10109
P89LPC932A1 User manual
2. After the current (highest priority) event is serviced, write a logic 0 to the
corresponding interrupt flag bit in the TIFR2 register to clear the flag.
3. Read the TISE2 register. If the priority-encoded interrupt source is ‘000’, all CCU
interrupts are serviced and a return from interrupt can occur. Otherwise, return to step
2
for the next interrupt.
Fig 24. Capture/compare unit interrupts.
002aaa896
interrupt to
CPU
TOIE2 (TICR2.7)
TOIF2 (TIFR2.7)
TICIE2A (TICR2.0)
TICF2A (TIFR2.0)
TICIE2B (TICR2.1)
TICF2B (TIFR2.1)
TOCIE2A (TICR2.3)
TOCF2A (TIFR2.3)
TOCIE2B (TICR2.4)
TOCF2B (TIFR2.4)
TOCIE2C (TICR2.5)
TOCF2C (TIFR2.5)
TOCIE2D (TICR2.6)
TOCF2D (TIFR2.6)
EA (IEN0.7)
ECCU (IEN1.4)
PRIORITY
ENCODER
other
interrupt
sources
ENCINT.0
ENCINT.1
ENCINT.2
Table 40: CCU interrupt status encode register (TISE2 - address DEh) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol-----ENCINT.2ENCINT.1ENCINT.0
Resetxxxxx000