Chapter 30 fast ethernet controller (fec), 1 introduction, 1 mcf548x family products – Freescale Semiconductor MCF5480 User Manual
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MCF548x Reference Manual, Rev. 3
Freescale Semiconductor
30-1
Chapter 30
Fast Ethernet Controller (FEC)
30.1
Introduction
This Fast Ethernet Controller (FEC) chapter provides a functional block diagram, a feature-set overview,
and transceiver connection information for both the 10 and 100 Mbps MII (Media Independent Interface),
as well as the 7-wire serial interface. Additionally, detailed descriptions of operation and the programming
model are included.
30.1.1
MCF548x Family Products
The number of FECs supported varies for different members of the MCF548x family as shown in
.
30.1.2
Block Diagram
The block diagram of the FEC is shown below. The FEC is implemented with a combination of hardware
and microcode. The off-chip (Ethernet) interfaces are compliant with industry and IEEE 802.3 standards.
Table 30-1. MCF548x Family Products
Product
Number of FECs supported
MCF5485
Two FECs
MCF5484
Two FECs
MCF5483
One FEC
MCF5482
One FEC
MCF5481
Two FECs
MCF5480
Two FECs