mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 44

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

Overview
byte, word, longword or 16-byte burst line transfers. These transfers are triggered by software, explicitly
setting a DCRn[START] bit or the occurrence of a hardware event from one of the on-chip peripheral
devices, such as a capture event or an output reference event in a DMA timer (DTIMn) for each channel.
The DMA controller supports dual-address mode to on-chip devices.
1.1.17
The reset controller is provided to determine the cause of reset, assert the appropriate reset signals to the
system, and keep track of what caused the last reset. The power management registers for the internal
low-voltage detect (LVD) circuit are implemented in the reset module. There are seven sources of reset:
External reset on the RSTO pin is software-assertable independent of chip reset state. There are also
software-readable status flags indicating the cause of the last reset, and LVD control and status bits for
setup and use of LVD reset or interrupt.
1.2
1.2.1
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
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.
1.2.3
The I
exchange, minimizing the interconnection between devices. This bus is suitable for applications requiring
occasional communications over a short distance between many devices.
1-12
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2
C bus is a two-wire, bidirectional serial bus that provides a simple, efficient method of data
External
Power-on reset (POR)
Watchdog timer
Phase-locked loop (PLL) loss of lock
PLL loss of clock
Software
Low-voltage detection (LVD) reset
MCF5282-Specific Features
Reset
Fast Ethernet Controller (FEC)
FlexCAN
I
2
C Bus
The MCF5214 and MCF5216 devices do not contain an FEC module.
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
NOTE
Freescale Semiconductor