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Chapter 19 Port Integration Module (S12XFPIMV2)
MC9S12XF - Family Reference Manual, Rev.1.19
880
Freescale Semiconductor
19.3.53 Port H Data Register (PTH)
Address 0x0260
Access: User read/write(1)
1. Read: Anytime.
Write: Anytime.
76543210
R
PTH7
PTH6
PTH5
PTH4
PTH3
PTH2
PTH1
PTH0
W
Altern.
Function
—
TXE_B
TXD_B
RXD_B
—
TXE_A
TXD_A
RXD_A
Reset
00000000
Figure 19-51. Port H Data Register (PTH)
Table 19-46. PTH Register Field Descriptions
Field
Description
7
PTH
Port H general purpose input/output data—Data Register
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
PTH
Port H general purpose input/output data—Data Register
This pin is associated with the FlexRay channel B transmitter enable signal (TXE_B).
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
PTH
Port H general purpose input/output data—Data Register
This pin is associated with the FlexRay channel B transmit pin (TXD_B).
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
PTH
Port H general purpose input/output data—Data Register
This pin is associated with the FlexRay channel B receive pin (RXD_B).
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
PTH
Port H general purpose input/output data—Data Register
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
PTH
Port H general purpose input/output data—Data Register
This pin is associated with the FlexRay channel A transmitter enable signal (TXE_A).
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.