MC9S12KG128_10 Datasheet, PDF (425/606 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 13 Timer Module (TIM16B8CV1) Block Description
Module Base + 0x0009
7
R
OM3
W
6
OL3
5
OM2
4
OL2
3
OM1
2
OL1
1
OM0
0
OL0
Reset
0
0
0
0
0
0
0
0
Figure 13-15. Timer Control Register 2 (TCTL2)
Read: Anytime
Write: Anytime
Table 13-9. TCTL1/TCTL2 Field Descriptions
Field
7:0
OMx
7:0
OLx
Description
Output Mode — These eight pairs of control bits are encoded to specify the output action to be taken as a result
of a successful OCx compare. When either OMx or OLx is 1, the pin associated with OCx becomes an output
tied to OCx.
Note: To enable output action by OMx bits on timer port, the corresponding bit in OC7M should be cleared.
Output Level — These eight pairs of control bits are encoded to specify the output action to be taken as a result
of a successful OCx compare. When either OMx or OLx is 1, the pin associated with OCx becomes an output
tied to OCx.
Note: To enable output action by OLx bits on timer port, the corresponding bit in OC7M should be cleared.
Table 13-10. Compare Result Output Action
OMx
0
0
1
1
OLx
Action
0
Timer disconnected from output pin logic
1
Toggle OCx output line
0
Clear OCx output line to zero
1
Set OCx output line to one
To operate the 16-bit pulse accumulator independently of input capture or output compare 7 and 0
respectively the user must set the corresponding bits IOSx = 1, OMx = 0 and OLx = 0. OC7M7 in the
OC7M register must also be cleared.
To enable output action using the OM7 and OL7 bits on the timer port,the corresponding bit OC7M7 in
the OC7M register must also be cleared. The settings for these bits can be seen in Table 13-11
Table 13-11. The OC7 and OCx event priority
OC7M7=0
OC7Mx=1
TC7=TCx
TC7>TCx
IOCx=OC7Dx IOCx=OC7Dx
IOC7=OM7/O +OMx/OLx
L7
IOC7=OM7/O
L7
OC7Mx=0
TC7=TCx
TC7>TCx
IOCx=OMx/OLx
IOC7=OM7/OL7
OC7M7=1
OC7Mx=1
TC7=TCx
TC7>TCx
IOCx=OC7Dx IOCx=OC7Dx
IOC7=OC7D7 +OMx/OLx
IOC7=OC7D7
OC7Mx=0
TC7=TCx
TC7>TCx
IOCx=OMx/OLx
IOC7=OC7D7
MC9S12KG128 Data Sheet, Rev. 1.16
Freescale Semiconductor
425