Datasheet

Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
856 Freescale Semiconductor
22.3.2.39 Port P Input Register (PTIP)
Read: Anytime.
Write: Never, writes to this register have no effect.
This register always reads back the buffered state of the associated pins. This can also be used to detect
overload or short circuit conditions on output pins.
76543210
R PTIP7 PTIP6 PTIP5 PTIP4 PTIP3 PTIP2 PTIP1 PTIP0
W
Reset
1
1
These registers are reset to zero. Two bus clock cycles after reset release the register values are updated with the associated
pin values.
————————
= Unimplemented or Reserved
Figure 22-41. Port P Input Register (PTIP)