S9S12XS256J0CAL Datasheet, PDF (86/738 Pages) Freescale Semiconductor, Inc – Microcontrollers

Port Integration Module (S12XSPIMV1)
Table 2-16. PTT Register Field Descriptions (continued)
Field
5
PTT
3-0
PTT
Description
Port T general purpose input/output data—Data Register, TIM output, routed PWM output, VREG_API output
When not used with the alternative function, the associated pin can be used as general purpose I/O. In general
purpose output mode the register bit value is driven to the pin.
If the associated data direction bit is set to 1, a read returns the value of the port register bit, otherwise the buffered
pin input state is read.
• The TIM output function takes precedence over the routed PWM, VREG_API function and the general purpose
I/O function if the related channel is enabled.
• The routed PWM function takes precedence over VREG_API and the general purpose I/O function if the related
channel is enabled.
• The VREG_API takes precedence over the general purpose I/O function if enabled.
Port T general purpose input/output data—Data Register, TIM output
When not used with the alternative function, the associated pin can be used as general purpose I/O. In general
purpose output mode the register bit value is driven to the pin.
If the associated data direction bit is set to 1, a read returns the value of the port register bit, otherwise the buffered
pin input state is read.
• The TIM output function takes precedence over the general purpose I/O function if the related channel is enabled.
2.3.19 Port T Input Register (PTIT)
Address 0x0241
7
R PTIT7
6
PTIT6
5
PTIT5
4
PTIT4
3
PTIT3
2
PTIT2
W
Reset
u
u
u
u
u
u
= Unimplemented or Reserved
u = Unaffected by reset
Figure 2-17. Port T Input Register (PTIT)
1 _{Read: Anytime}
Write:Never, writes to this register have no effect
Access: User read¹
1
PTIT1
0
PTIT0
u
u
Field
7-0
PTIT
Table 2-17. PTIT Register Field Descriptions
Description
Port T input data—
A read always returns the buffered input state of the associated pin. It can be used to detect overload or short circuit
conditions on output pins.
S12XS Family Reference Manual, Rev. 1.13
86
Freescale Semiconductor