mc9s12c32mpb16 Freescale Semiconductor, Inc, mc9s12c32mpb16 Datasheet - Page 89

• Manufacturer Part Number: mc9s12c32mpb16
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

2.3.2.3
2.3.2.3.1
Read: Anytime.
Write: Anytime.
If the data direction bits of the associated I/O pins are set to 1, a read returns the value of the port register,
otherwise the value at the pins is read.
The SPI pin configurations (PM[5:2]) is determined by several status bits in the SPI module. Please refer
to the SPI Block User Guide for details.
2.3.2.3.2
Read: Anytime.
Write: Never, writes to this register have no effect.
Freescale Semiconductor
Module Base + 0x0010
Module Base + 0x0011
MSCAN/
PTIM[5:0]
Reset
Reset
Field
5–0
SPI
W
W
R
R
Port M Input Register — This register always reads back the status of the associated pins. This also can be
used to detect overload or short circuit conditions on output pins.
Port M Registers
—
—
0
0
0
7
7
Port M I/O Register (PTM)
Port M Input Register (PTIM)
= Unimplemented or Reserved
= Unimplemented or Reserved
—
—
0
0
0
6
6
Figure 2-18. Port M Input Register (PTIM)
Figure 2-17. Port M I/O Register (PTM)
Table 2-16. PTIM Field Descriptions
PTIM5
PTM5
MC9S12C-Family / MC9S12GC-Family
SCK
—
0
5
5
PTIM4
PTM4
MOSI
Rev 01.23
—
0
4
4
Description
Chapter 2 Port Integration Module (PIM9C32) Block Description
PTIM3
PTM3
SS
—
0
3
3
PTIM2
PTM2
MISO
—
0
2
2
TXCAN
PTIM1
PTM1
—
0
1
1
RXCAN
PTIM0
PTM0
—
0
0
0
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