Chapter 18 Periodic Interrupt Timer (S12PIT24B4CV2)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
683
18.3.0.4
PIT Multiplex Register (PITMUX)
Read: Anytime
Write: Anytime
18.3.0.5
PIT Interrupt Enable Register (PITINTE)
Read: Anytime
Write: Anytime
Module Base + 0x0003
7
6
5
4
3
2
1
0
R
0
0
0
0
PMUX3
PMUX2
PMUX1
PMUX0
W
Reset
0
0
0
0
0
0
0
0
Figure 18-6. PIT Multiplex Register (PITMUX)
Table 18-5. PITMUX Field Descriptions
Field
Description
3:0
PMUX[3:0]
PIT Multiplex Bits for Timer Channel 3:0
— These bits select if the corresponding 16-bit timer is connected to
micro time base 1 or 0. If PMUX is modified, the corresponding 16-bit timer is switched to the other micro time
base immediately.
0 The corresponding 16-bit timer counts with micro time base 0.
1 The corresponding 16-bit timer counts with micro time base 1.
Module Base + 0x0004
7
6
5
4
3
2
1
0
R
0
0
0
0
PINTE3
PINTE2
PINTE1
PINTE0
W
Reset
0
0
0
0
0
0
0
0
Figure 18-7. PIT Interrupt Enable Register (PITINTE)
Table 18-6. PITINTE Field Descriptions
Field
Description
3:0
PINTE[3:0]
PIT Time-out Interrupt Enable Bits for Timer Channel 3:0
— These bits enable an interrupt service request
whenever the time-out flag PTF of the corresponding PIT channel is set. When an interrupt is pending (PTF set)
enabling the interrupt will immediately cause an interrupt. To avoid this, the corresponding PTF flag has to be
cleared first.
0 Interrupt of the corresponding PIT channel is disabled.
1 Interrupt of the corresponding PIT channel is enabled.
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages