Datasheet

Chapter 2 Port Integration Module (S12XEPIMV1)
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 177
2.3.106 Port F Polarity Select Register (PPSF)
2.3.107 PIM Reserved Register
2.3.108 Port F Routing Register (PTFRR)
Address 0x037D Access: User read/write
(1)
1. Read: Anytime.
Write: Anytime.
76543210
R
PPSF7 PPSF6 PPSF5 PPSF4 PPSF3 PPSF2 PPSF1 PPSF0
W
Reset 00000000
Figure 2-104. Port F Polarity Select Register (PPSF)
Table 2-101. PPSF Register Field Descriptions
Field Description
7-0
PPSF
Port F pull device select—Determine pull device polarity on input pins
This register selects whether a pull-down or a pull-up device is connected to the pin.
1 A pull-down device is connected to the associated pin, if enabled and if the pin is used as input.
0 A pull-up device is connected to the associated pin, if enabled and if the pin is used as input.
Address 0x037E Access: User read
(1)
1. Read: Always reads 0x00
Write: Unimplemented
76543210
R00000000
W
Reset 00000000
= Unimplemented or Reserved
Figure 2-105. PIM Reserved Register
Address 0x037F Access: User read/write
(1)
1. Read: Anytime.
Write: Anytime.
76543210
R0 0
PTFRR5 PTFRR4 PTFRR3 PTFRR2 PTFRR1 PTFRR0
W
Reset 00000000
= Unimplemented or Reserved
Figure 2-106. Port F Routing Register (PTFRR)