Chapter 2 Port Integration Module (S12XEPIMV1)
MC9S12XE-Family Reference Manual , Rev. 1.21
Freescale Semiconductor
169
Table 2-88. PTL Register Field Descriptions
Field
Description
7
PTL
Port L general purpose input/output data—Data Register
Port L pin 7 is associated with the TXD signal of the SCI7 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.
6
PTL
Port L general purpose input/output data—Data Register
Port L pin 6 is associated with the RXD signal of the SCI7 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.
5
PTL
Port L general purpose input/output data—Data Register
Port L 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.
4
PTL
Port L general purpose input/output data—Data Register
Port L 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.
3
PTL
Port L general purpose input/output data—Data Register
Port L 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.
2
PTL
Port L general purpose input/output data—Data Register
Port L 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.
1
PTL
Port L general purpose input/output data—Data Register
Port L 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.
0
PTL
Port L general purpose input/output data—Data Register
Port L 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.