Modes Of Operation; External Signal Description - NXP Semiconductors freescale KV4 Series Reference Manual

External Signal Description

28.2.2 Features
The major features of the AOI module are summarized below:
• Highly programmable module for creating combinational boolean events for use as
hardware triggers
• Each channel has four event inputs and one output
• Evaluates a combinational boolean expression as the sum of four products where
each product term includes all four selected input sources available as true or
complement values
• Event output is formed as purely combinational logic and operates as a hardware
trigger
• Memory-mapped device connected to the slave peripheral (IPS) bus
• Programming model organized per channel for simplified software

28.2.3 Modes of Operation

The AOI module does not support any special modes of operation. As shown in
28-1, its operation is primarily controlled by the selected event inputs and outputs.
Additionally, as a memory-mapped device located on the slave peripheral bus, it responds
based strictly on memory address for accesses to its programming model.
The AOI module resides in the slave peripheral bus clock domain.
28.3 External Signal Description
The AOI module does not directly support any external interfaces. There may be package
input signals (indirectly) connected to the module as event inputs, but since the AOI does
not include any input synchronization hardware, this function must be handled before the
event input signals are routed into the module.
28.4 Memory Map and Register Descriptions
The AOI module supports access to its programming model via a 16-bit peripheral bus
connection. The module is designed to support 16-bit accesses only. Functionality for
accesses of other widths is undefined.
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KV4x Reference Manual, Rev. 2, 02/2015
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Freescale Semiconductor, Inc.