NXP Semiconductors MPC5605BK, Reference Manual

Page: 349 / 964

Chapter 20 System Integration Unit Lite (SIUL)
MPC5606BK Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 349
20.3 Features
The System Integration Unit Lite supports these distinctive features:
• GPIO
— GPIO function on as many as 149 I/O pins
— Dedicated input and output registers for most GPIO pins
1
• External interrupts
— Three interrupt vectors dedicated to 24 external interrupts
— 24 programmable digital glitch filters
— Independent interrupt mask
— Edge detection
• System configuration
— Pad configuration control
20.4 External signal description
Most device pads support multiple device functions. Pad configuration registers are provided to enable
selection between GPIO and other signals. These other signals, also referred to as alternate functions, are
typically peripheral functions.
GPIO pads are grouped in ports, with each port containing as many as 16 pads. With appropriate
configuration, all pins in a port can be read or written to in parallel with a single R/W access.
NOTE
In order to use GPIO port functionality, all pads in the port must be
configured as GPIO rather than as alternate functions.
Table 20-1 lists the external pins configurable via the SIUL.
(
1.Some device pins, e.g., analog pins, do not have both input and output functionality.
Table 20-1. SIUL signal properties
GPIO[0:148]
category
Name
I/O
direction
Function
System configuration GPIO[0:148]
1
1
GPIO[0–26], GPIO[28–59], and GPIO[61–122] in 144-pin LQFP; GPIO[0–26], GPIO[28–59], GPIO[61–76], and
GPIO[121–122] in 100-pin LQFP
I/O
2
2
Most, but not all GPIO pads can be configured as inputs or outputs but some, e.g., analog pins with GPIO function,
are only configurable as inputs.
General-purpose input/output
External interrupt PA[3], PA[6:8], PA[11:12],
PA[14], PC[2:5], PC[12],
PC[14:15], PE[2], PE[4],
PE[6:7], PE[10], PE[12],
PE[14], PF[15], PG[1],
PG[8]
3
3
PE[14], PF[15], PG[1], and PG[8] not available in 100-pin LQFP
Input Pins with External Interrupt Request
functionality. Please see
Chapter 4, Signal
description , for details.