PC312XDP512F0CFVR datasheet(1028/1348 Pages) FREESCALE

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Chapter 24 DG128 Port Integration Module (S12XDG128PIMV2)

MC9S12XDP512 Data Sheet, Rev. 2.21

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Freescale Semiconductor

24.0.6.4

Reduced Drive Register

If the pin is used as an output this register allows the configuration of the drive strength.

24.0.6.5

Pull Device Enable Register

This register turns on a pull-up or pull-down device. It becomes active only if the pin is used as an input

or as a wired-OR output.

24.0.6.6

Polarity Select Register

This register selects either a pull-up or pull-down device if enabled. It becomes active only if the pin is

used as an input. A pull-up device can be activated if the pin is used as a wired-OR output. If the pin is

used as an interrupt input this register selects the active interrupt edge.

24.0.6.7

Wired-OR Mode Register

If the pin is used as an output this register turns off the active high drive. This allows wired-OR type

connections of outputs.

24.0.6.8

Interrupt Enable Register

If the pin is used as an interrupt input this register serves as a mask to the interrupt flag to enable/disable

the interrupt.

24.0.6.9

Interrupt Flag Register

If the pin is used as an interrupt input this register holds the interrupt flag after a valid pin event.

24.0.6.10 Module Routing Register

This register supports the re-routing of the CAN0, CAN4, SPI0, SPI1, and SPI2 pins to alternative ports.

This allows a software re-configuration of the pinouts of the different package options with respect to

above peripherals.

NOTE

The purpose of the module routing register is to provide maximum

ﬂexibility for derivatives with a lower number of MSCAN and SPI modules.

PC312XDP512F0CFVR Datasheet(PDF) 1028 Page - Freescale Semiconductor, Inc