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2. After the current (highest priority) event is serviced, write a logic 0 to the
3. Read the TISE2 register. If the priority-encoded interrupt source is '000', all CCU
EA (IEN0.7)
ECCU (IEN1.4)
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)
Fig 25. Capture/compare unit interrupts.
Table 55:
CCU interrupt status encode register (TISE2 - address DEh) bit allocation
Bit
7
Symbol
-
Reset
x
User manual
corresponding interrupt flag bit in the TIFR2 register to clear the flag.
interrupts are serviced and a return from interrupt can occur. Otherwise, return to step
2
for the next interrupt.
6
5
-
-
x
x
Rev. 03 — 7 June 2005
other
interrupt
sources
PRIORITY
ENCODER
4
3
-
-
x
x
UM10119
P89LPC938 User manual
interrupt to
CPU
ENCINT.0
ENCINT.1
ENCINT.2
002aaa896
2
1
ENCINT.2
ENCINT.1
0
0
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
0
ENCINT.0
0
63 of 139
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