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Chapter 2 Port Integration Module (S12XEPIMV1)
MC9S12XE-Family Reference Manual , Rev. 1.07
168
Freescale Semiconductor
2.3.101 Port F Data Register (PTF)
Address 0x0378
Access: User read/write
1
1
Read: Anytime.
Write: Anytime.
7
6
5
4
3
2
1
0
R
PTF7
PTFT6
PTF5
PTF4
PTF3
PTF2
PTF1
PTF0
W
Altern.
Function
(TXD3)
(RXD3)
(SCL0)
(SDA0)
(CS3)
(CS2)
(CS1)
(CS0)
Reset
0
0
0
0
0
0
0
0
Figure 2-99. Port F Data Register (PTF)
Table 2-95. PTF Register Field Descriptions
Field
Description
7
PTF
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.
6
PTF
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.
5
PTF
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.
4
PTF
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.
3
PTF
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.
2
PTF
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.