PXD10RM Datasheet, PDF (1206/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

the number of alternate functions may or may not be present depending on the number of alternate
functions actually mapped on the pad.
Figure 37-11. Pad Configuration Register (PCR) for the different pad types in PXD10
Pad type
Pad with GPIO
and digital
alternate
function
Pad with slew
rate control
Pad with GPIO
and analog
functionality
0123
SMC APC
SMC APC
SMC APC
45678
PA[1:0] OBE IBE
PA[1:0] OBE IBE
PA[1:0] OBE IBE
9 10 11 12 13 14 15
ODE
ODE
ODE
SRC[1:0] WPE WPS
SRC
WPE WPS
[1]
SRC[1:0] WPE WPS
Field
SMC
APC
PA[1:0]
OBE
IBE
ODE
Table 37-10. PCRx Field Descriptions
Description
Safe Mode Control
This bit supports the overriding of the automatic deactivation of the output buffer of the associated
pad upon entering SAFE mode of the SoC.
1: In SoC SAFE mode, the output buffer remains functional.
0: In SoC SAFE mode, the output buffer of the pad is disabled.
Analog Pad Control
This bit enables the usage of the pad as analog input.
1: Analog input path switch can be enabled by the ADC.
0: Analog input path from the pad is gated and can not be used.
Pad Output Assignment
This field is used to select the function that is allowed to drive the output of a multiplexed pad.
00: Alternative Mode 0: GPIO.
01: Alternative Mode 1: see Chapter 3, Signal Description”
10: Alternative Mode 2: see Chapter 3, Signal Description”
11: Alternative Mode 3: see Chapter 3, Signal Description”
Note: Number of bit depending of the number of actual alternate function. Please refer to
datasheet
Output Buffer Enable
This bit enables the output buffer of the pad in case the pad is in GPIO mode.
1: Output Buffer of the pad is enabled when PA = 00.
0: Output Buffer of the pad is disabled when PA = 00.
Input Buffer Enable
This bit enables the input buffer of the pad.
1: Input Buffer of the pad is enabled.
0: Input Buffer of the pad is disabled.
Open Drain Output Enable
This bit controls output driver configuration for the pads connected to this signal. Either open drain
or push/pull driver configurations can be selected. This feature applies to output pads only.
1: Open drain enable signal is asserted for the pad.
0: Open drain enable signal is negated for the pad.
37-12
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor