Freescale Semiconductor, Inc.
Timing System
IC1F–IC3F — Input capture x flag
1 = Selected edge has been detected on corresponding port pin.
0 = Selected edge has not been detected on corresponding port
pin.
These flags are set each time a selected active edge is detected on
the ICx input line
8.5.9 TMSK2 — Timer interrupt mask register 2
State
on reset
Address bit 7
$0024 TOI
bit 6
bit 5
bit 4
bit 3
0
bit 2
0
bit 1
PR1
bit 0
Timer interrupt mask 2 (TMSK2)
RTII PAOVI PAII
PR0 0000 0000
Use this 8-bit register to enable or inhibit timer overflow and real-time
interrupts. The timer prescaler control bits are included in this register.
NOTE: Bits in TMSK2 correspond bit for bit with flag bits in TFLG2. Ones in
TMSK2 enable the corresponding interrupt sources.
TOI — Timer overflow interrupt enable
1 = Timer overflow interrupt requested when TOF is set.
0 = TOF interrupts disabled.
RTII — Real-time interrupt enable (refer to Real-time interrupt)
PAOVI — Pulse accumulator overflow interrupt enable (refer to
Pulse accumulator status and interrupt bits)
PAII — Pulse accumulator input edge interrupt enable (refer to
Pulse accumulator status and interrupt bits)
PR[1:0] — Timer prescaler select
PR[1:0]
0 0
Prescaler
1
4
0 1
1 0
8
1 1
16
Technical Data
MC68HC11P2 — Rev 1.0
Timing System
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