S9S12XS256J0CAL Datasheet, PDF (98/738 Pages) Freescale Semiconductor, Inc – Microcontrollers

Port Integration Module (S12XSPIMV1)
2.3.35 Port M Input Register (PTIM)
Address 0x0251
7
R PTIM7
6
PTIM6
5
PTIM5
4
PTIM4
3
PTIM3
2
PTIM2
W
Reset
u
u
u
u
u
u
= Unimplemented or Reserved
u = Unaffected by reset
Figure 2-33. Port M Input Register (PTIM)
1 _{Read: Anytime}
Write:Never, writes to this register have no effect
Access: User read¹
1
PTIM1
0
PTIM0
u
u
Field
7-0
PTIM
Table 2-31. PTIM Register Field Descriptions
Description
Port M 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.
2.3.36 Port M Data Direction Register (DDRM)
Address 0x0252
R
W
Reset
7
DDRM7
0
1 _{Read: Anytime}
Write: Anytime
6
DDRM6
5
DDRM5
4
DDRM4
3
DDRM3
2
DDRM2
0
0
0
0
0
Figure 2-34. Port M Data Direction Register (DDRM)
Access: User read/write¹
1
0
DDRM1
DDRM0
0
0
S12XS Family Reference Manual, Rev. 1.13
98
Freescale Semiconductor