S912XEG128J2MAA Datasheet, PDF (174/1324 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 2 Port Integration Module (S12XEPIMV1)
Field
7
PTF
6
PTF
5
PTF
4
PTF
3
PTF
2
PTF
1
PTF
0
PTF
Table 2-96. PTF Register Field Descriptions
Description
Port F general purpose input/output data—Data Register
Port F pin 7 is associated with the TXD signal of the SCI3 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port F general purpose input/output data—Data Register
Port F pin 6 is associated with the RXD signal of the SCI3 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port F general purpose input/output data—Data Register
Port F pin 5 is associated with the TXD signal of the SCI6 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port F general purpose input/output data—Data Register
Port F pin 4 is associated with the RXD signal of the SCI6 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port F general purpose input/output data—Data Register
Port F pin 3 is associated with the TXD signal of the SC5 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port F general purpose input/output data—Data Register
Port F pin 2 is associated with the RXD signal of the SCI5 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port F general purpose input/output data—Data Register
Port F pin 3 is associated with the TXD signal of the SCI4 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
Port F general purpose input/output data—Data Register
Port F pin 2 is associated with the RXD signal of the SCI4 module.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bit of this pin is set to 1, a read returns the value of the port register, otherwise the
buffered pin input state is read.
MC9S12XE-Family Reference Manual Rev. 1.25
174
Freescale Semiconductor