Port Integration Module (S12PPIMV1)
2.3.44 Port P Pull Device Enable Register (PERP)
Address 0x025C
Access: User read/write(1)
7
6
5
4
3
2
1
0
R
W
0
PPSP7
PPSP5
PPSP4
PPSP3
PPSP2
PPSP1
PPSP0
Reset
0
0
0
0
0
0
0
0
Figure 2-42. Port P Pull Device Enable Register (PERP)
1. Read: Anytime
Write: Anytime
Table 2-39. PERP Register Field Descriptions
Description
Field
7,5-0
Port P pull device enable—Enable pull device on input pin
PERP
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
no effect. The polarity is selected by the related polarity select register bit.
1 Pull device enabled
0 Pull device disabled
2.3.45 Port P Polarity Select Register (PPSP)
Address 0x025D
Access: User read/write(1)
7
6
5
4
3
2
1
0
R
W
0
PPSP7
PPSP5
PPSP4
PPSP3
PPSP2
PPSP1
PPSP0
Reset
0
0
0
0
0
0
0
0
Figure 2-43. Port P Polarity Select Register (PPSP)
1. Read: Anytime
Write: Anytime
Table 2-40. PPSP Register Field Descriptions
Description
Field
7,5-0
PPSP
Port P pull device select—Configure pull device and pin interrupt edge polarity on input pin
This bit selects a pull-up or a pull-down device if enabled on the associated port input pin.
This bit also selects the polarity of the active pin interrupt edge.
1 A pull-down device is selected; rising edge selected
0 A pull-up device is selected; falling edge selected
S12P-Family Reference Manual, Rev. 1.13
90
Freescale Semiconductor
FREESCALE [ Freescale ]
