D.2.12 TMSK1/TMSK2 — Timer Interrupt Mask Registers 1 and 2
$YFF920
15
14
11
10
8
7
6
0
5
4
3
2
0
0
I4/O5I
OCI
ICI
0
TOI
PAOVI
PAII CPROUT
CPR
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TMSK1 enables OC and IC interrupts. TMSK2 controls pulse accumulator interrupts
and TCNT functions.
I4/O5I — Input Capture 4/Output Compare 5 Interrupt Enable
0 = IC4/OC5 interrupt disabled
1 = IC4/OC5 interrupt requested when I4/O5F flag in TFLG1 is set
OCI[4:1] — Output Compare Interrupt Enable
0 = OC interrupt disabled
1 = OC interrupt requested when OC flag set
OCI[4:1] correspond to OC[4:1].
ICI[3:1] — Input Capture Interrupt Enable
0 = IC interrupt disabled
D
1 = IC interrupt requested when IC flag set
ICI[3:1] correspond to IC[3:1].
TOI — Timer Overflow Interrupt Enable
0 = Timer overflow interrupt disabled
1 = Interrupt requested when TOF flag is set
PAOVI — Pulse Accumulator Overflow Interrupt Enable
0 = Pulse accumulator overflow interrupt disabled
1 = Interrupt requested when PAOVF flag is set
PAII — Pulse Accumulator Input Interrupt Enable
0 = Pulse accumulator interrupt disabled
1 = Interrupt requested when PAIF flag is set
CPROUT — Capture/Compare Unit Clock Output Enable
0 = Normal operation for OC1 pin
1 = TCNT clock driven out OC1 pin
CPR[2:0] — Timer Prescaler/PCLK Select Field
This field selects one of seven prescaler taps or PCLK to be TCNT input.
MC68331
REGISTER SUMMARY
MOTOROLA
D-9
USER’S MANUAL
MOTOROLA [ MOTOROLA ]
