MC9S12GRMV1 Datasheet, PDF (224/1292 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

Port Integration Module (S12GPIMV1)
2.4.3.31 Port M Polarity Select Register (PPSM)
Address 0x0255 (G1, G2)
7
R
0
W
Reset
0
Address 0x0255 (G3)
7
R
0
W
Reset
0
1 _{Read: Anytime}
Write: Anytime
6
5
4
3
2
0
0
0
PPSM3
PPSM2
0
0
0
0
0
6
5
4
3
2
0
0
0
0
0
0
0
0
0
0
Figure 2-32. Port M Polarity Select Register (PPSM)
Access: User read/write¹
1
0
PPSM1
PPSM0
0
0
Access: User read/write¹
1
0
PPSM1
PPSM0
0
0
Table 2-56. PPSM Register Field Descriptions
Field
3-0
PPSM
Description
Port M pull device select—Configure pull device polarity on input pin
This bit selects a pullup or a pulldown device if enabled on the associated port input pin.
1 Pulldown device selected
0 Pullup device selected
2.4.3.32 Port M Wired-Or Mode Register (WOMM)
Address 0x0256 (G1, G2)
7
R
0
W
Reset
0
Address 0x0256 (G3)
7
R
0
W
Reset
0
1 _{Read: Anytime}
Write: Anytime
6
5
4
3
2
0
0
0
WOMM3 WOMM2
0
0
0
0
0
6
5
4
3
2
0
0
0
0
0
0
0
0
0
0
Figure 2-33. Port M Wired-Or Mode Register (WOMM)
Access: User read/write¹
1
0
WOMM1 WOMM0
0
0
Access: User read/write¹
1
0
WOMM1 WOMM0
0
0
MC9S12G Family Reference Manual, Rev.1.23
226
Freescale Semiconductor