Chapter 17 Periodic Interrupt Timer (S12PIT24B8CV2)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
665
17.3.0.3
PIT Channel Enable Register (PITCE)
Read: Anytime
Write: Anytime
17.3.0.4
PIT Multiplex Register (PITMUX)
Read: Anytime
Write: Anytime
Table 17-3. PITFLT Field Descriptions
Field
Description
7:0
PFLT[7:0]
PIT Force Load Bits for Timer 7-0
— These bits have only an effect if the corresponding timer channel (PCE
set) is enabled and if the PIT module is enabled (PITE set). Writing a one into a PFLT bit loads the corresponding
16-bit timer load register into the 16-bit timer down-counter. Writing a zero has no effect. Reading these bits will
always return zero.
Module Base + 0x0002
7
6
5
4
3
2
1
0
R
PCE7
PCE6
PCE5
PCE4
PCE3
PCE2
PCE1
PCE0
W
Reset
0
0
0
0
0
0
0
0
Figure 17-5. PIT Channel Enable Register (PITCE)
Table 17-4. PITCE Field Descriptions
Field
Description
7:0
PCE[7:0]
PIT Enable Bits for Timer Channel 7:0
— These bits enable the PIT channels 7-0. If PCE is cleared, the PIT
channel is disabled and the corresponding flag bit in the PITTF register is cleared. When PCE is set, and if the
PIT module is enabled (PITE = 1) the 16-bit timer counter is loaded with the start count value and starts down-
counting.
0 The corresponding PIT channel is disabled.
1 The corresponding PIT channel is enabled.
Module Base + 0x0003
7
6
5
4
3
2
1
0
R
PMUX7
PMUX6
PMUX5
PMUX4
PMUX3
PMUX2
PMUX1
PMUX0
W
Reset
0
0
0
0
0
0
0
0
Figure 17-6. PIT Multiplex Register (PITMUX)
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