S9S12XS256J0CAL Datasheet, PDF (94/738 Pages) Freescale Semiconductor, Inc – Microcontrollers

Port Integration Module (S12XSPIMV1)
2.3.29 Port S Reduced Drive Register (RDRS)
Address 0x024A
R
W
Reset
7
RDRS7
0
1 _{Read: Anytime}
Write: Anytime
6
RDRS6
5
RDRS5
4
RDRS4
3
RDRS3
2
RDRS2
0
0
0
0
0
Figure 2-27. Port S Reduced Drive Register (RDRS)
Access: User read/write¹
1
0
RDRS1
RDRS0
0
0
Table 2-26. RDRS Register Field Descriptions
Field
7-0
RDRS
Description
Port S reduced drive—Select reduced drive for output pin
This bit configures the drive strength of the associated output pin as either full or reduced. If a pin is used as input
this bit has no effect. The reduced drive function is independent of which function is being used on a particular pin.
1 Reduced drive selected (approx. 1/5 of the full drive strength)
0 Full drive strength enabled
2.3.30 Port S Pull Device Enable Register (PERS)
Address 0x024B
R
W
Reset
7
PERS7
1
1 _{Read: Anytime}
Write: Anytime
6
PERS6
5
PERS5
4
PERS4
3
PERS3
2
PERS2
1
1
1
1
1
Figure 2-28. Port S Pull Device Enable Register (PERS)
Access: User read/write¹
1
0
PERS1
PERS0
1
1
Table 2-27. PERS Register Field Descriptions
Field
7-0
PERS
Description
Port S pull device enable—Enable pull device on input pin or wired-or output pin
This bit controls whether a pull device on the associated port input pin is active. If a pin is used as output this bit has
only effect if used in wired-or mode. The polarity is selected by the related polarity select register bit.
1 Pull device enabled
0 Pull device disabled
S12XS Family Reference Manual, Rev. 1.13
94
Freescale Semiconductor