S912XEQ384J3MALR Freescale Semiconductor, S912XEQ384J3MALR Datasheet - Page 138

• Manufacturer Part Number: S912XEQ384J3MALR
• Description: S912XEQ Series 16 Bit 50 Mhz 384 KB Flash 24 KB Ram Microcontroller - LQFP-112
• Manufacturer: Freescale Semiconductor

1. Read: Anytime.
Chapter 2 Port Integration Module (S12XEPIMV1)
2.3.46
138
Address 0x0259
Write:Never, writes to this register have no effect.
Field
PTP
PTP
PTP
PTP
Reset
3
2
1
0
W
R
Port P general purpose input/output data—Data Register
Port P pin 3 is associated with the PWM output channel 3 and the SS signal of SPI1.
The PWM function takes precedence over the SPI1 and the general purpose I/O function if the PWM channel 3 is
enabled. The SPI1 function takes precedence of the general purpose I/O function if the routed SPI1 is enabled.
When not used with the alternative functions, these pins can be used as general purpose I/O.
If the associated data direction bits of these pins are set to 1, a read returns the value of the port register, otherwise
the buffered pin input state is read.
Port P general purpose input/output data—Data Register
Port P pin 2 is associated with the PWM output channel 2 and the SCK signal of SPI1.
The PWM function takes precedence over the SPI1 and the general purpose I/O function if the PWM channel 2 is
enabled. The SPI1 function takes precedence of the general purpose I/O function if the routed SPI1 is enabled.
When not used with the alternative functions, these pins can be used as general purpose I/O.
If the associated data direction bits of these pins are set to 1, a read returns the value of the port register, otherwise
the buffered pin input state is read.
Port P general purpose input/output data—Data Register
Port P pin 1 is associated with the PWM output channel 1 and the MOSI signal of SPI1.
The PWM function takes precedence over the SPI1 and the general purpose I/O function if the PWM channel 1 is
enabled. The SPI1 function takes precedence of the general purpose I/O function if the routed SPI1 is enabled.
When not used with the alternative functions, these pins can be used as general purpose I/O.
If the associated data direction bits of these pins are set to 1, a read returns the value of the port register, otherwise
the buffered pin input state is read.
Port P general purpose input/output data—Data Register
Port P pin 0 is associated with the PWM output channel 0 and the MISO signal of SPI1.
The PWM function takes precedence over the SPI1 and the general purpose I/O function if the PWM channel 0 is
enabled. The SPI1 function takes precedence of the general purpose I/O function if the routed SPI1 is enabled.
When not used with the alternative functions, these pins can be used as general purpose I/O.
If the associated data direction bits of these pins are set to 1, a read returns the value of the port register, otherwise
the buffered pin input state is read.
PTIP7
Port P Input Register (PTIP)
u
7
= Unimplemented or Reserved
PTIP6
Table 2-41. PTP Register Field Descriptions (continued)
u
6
MC9S12XE-Family Reference Manual Rev. 1.24
Figure 2-44. Port P Input Register (PTIP)
PTIP5
u
5
PTIP4
u
4
Description
u = Unaffected by reset
PTIP3
3
u
PTIP2
u
2
Freescale Semiconductor
PTIP1
u
1
Access: User read
PTIP0
u
0
(1)