PXR40RM Datasheet, PDF (132/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Resets
the eTPU and eMIOS pins caused by switching pull up/down states. The final value of WKPCFG is
latched 4 clock cycles before the negation of RSTOUT. After reset, software may modify the weak pull
up/down selection for all I/O pins through the PCR registers in the SIU.
4-12
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor