MC9S12Q128_10 Datasheet, PDF (83/644 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

2.3.2.1.6
Chapter 2 Port Integration Module (PIM9C32) Block Description
Port T Polarity Select Register (PTTST)
Module Base + 0x0005
R
W
Reset
7
PPST7
0
Read: Anytime.
Write: Anytime.
6
PPST6
5
PPST5
4
PPST4
3
PPST3
2
PPST2
0
0
0
0
0
Figure 2-8. Port T Polarity Select Register (PPST)
Table 2-8. PPST Field Descriptions
1
PPST1
0
0
PPST0
0
Field
Description
7–0
PPST[7:0]
Pull Select Port T — This register selects whether a pull-down or a pull-up device is connected to the pin.
0 A pull-up device is connected to the associated port T pin, if enabled by the associated bit in register PERT
and if the port is used as input.
1 A pull-down device is connected to the associated port T pin, if enabled by the associated bit in register PERT
and if the port is used as input.
2.3.2.1.7 Port T Module Routing Register (MODRR)
Module Base + 0x0007
7
6
5
4
3
2
1
R
0
0
0
MODRR4 MODRR3 MODRR2 MODRR1
W
Reset
—
—
—
0
0
0
0
= Unimplemented or Reserved
Figure 2-9. Port T Module Routing Register (MODRR)
Read: Anytime.
Write: Anytime.
NOTE
MODRR[4] must be kept clear on devices featuring a 4 channel PWM.
Table 2-9. MODRR Field Descriptions
Field
Description
4–0
Module Routing Register Port T — This register selects the module connected to port T.
MODRR[4:0] 0 Associated pin is connected to TIM module
1 Associated pin is connected to PWM module
0
MODRR0
0
Freescale Semiconductor
MC9S12Q128
83
Rev 1.10