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1.2
MCF5282-Specific Features
1.2.1
Fast Ethernet Controller (FEC)
The MCF5282's integrated Fast Ethernet Controller (FEC) performs the full set of IEEE
802.3/Ethernet CSMA/CD media access control and channel interface functions. The FEC
supports connection and functionality for the 10/100 Mbps 802.3 media independent
interface (MII). It requires an external transceiver (PHY) to complete the interface to the
media.
1.2.2
FlexCAN
The FlexCAN module is a communication controller implementing the CAN protocol. The
CAN protocol can be used as an industrial control serial data bus, meeting the specific
requirements of real-time processing, reliable operation in a harsh EMI environment,
cost-effectiveness, and required bandwidth. FlexCAN contains 16 message buffers.
2
1.2.3
I
C Bus
The I
C bus is a two-wire, bidirectional serial bus that provides a simple, efficient method
2
of data exchange, minimizing the interconnection between devices. This bus is suitable for
applications requiring occasional communications over a short distance between many
devices.
1.2.4
Queued Serial Peripheral Interface (QSPI)
The queued serial peripheral interface module provides a synchronous serial peripheral
interface with queued transfer capability. It allows up to 16 transfers to be queued at once,
eliminating CPU intervention between transfers.
1.2.5
Queued Analog-to-Digital Converter (QADC)
The QADC is a 10-bit, unipolar, successive approximation converter. A maximum of 8
analog input channels can be supported using internal multiplexing. A maximum of 18
input channels can be supported in the internal/external multiplexed mode.
The QADC consists of an analog front-end and a digital control subsystem. The analog
section includes input pins, an analog multiplexer, and sample and hold analog circuits. The
analog conversion is performed by the digital-to-analog converter (DAC) resistor-capacitor
array and a high-gain comparator.
The digital control section contains queue control logic to sequence the conversion process
and interrupt generation logic. Also included are the periodic/interval timer, control and
MOTOROLA
Chapter 1. Overview
MCF5282-Specific Features
1-15
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