M5249C3 Freescale Semiconductor, M5249C3 Datasheet - Page 63

• Manufacturer Part Number: M5249C3
• Description: KIT EVAL FOR M5249 W/ETHERNET
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: Microprocessorr

Specifications of M5249C3

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MCF5249
• Interface Type: RS-232, Ethernet
• For Use With/related Products: MCF5249
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Please see the MCF5249 Users Manual for more detail. The QSPI signals from the MCF5249 device are
brought out to expansion connector (J4). Some of these signals are multiplexed with other functions.
3.2.3
The MCF5249 offers 64-bits of general-purpose I/O of which 11 are dedicated general purpose inputs and
10 are dedicated general purpose outputs. Eight of the GPIO lines are also available as edge sensitive
interrupt inputs. The functions of all I/O pins are individually programmable, since they are multiplexed
with other pin functions. All general-purpose I/O pins (unless dedicated as either only input or output) can
be individually selected as input or output pins. After reset, all software configurable multi-function GPIO
pins default to general purpose input pins. At the same time, all multifunction pins that are not shared with
a GPIO pin default to high impedance. Internal pullup resistors avoid unknown read values in order to
reduce power consumption. They remain active until the corresponding port direction registers are
programmed.
Control registers are provided for each pin to select the function (GPIO or peripheral pin) assigned to each
pin individually. Pins can have from 1 to 4 functions including GPIO.
Please see the MCF5249 User’s manual for more detail. All of these signals are brought out to expansion
connectors (J4) & (J5).
3.2.4
The MCF5249 device has an Ethernet controller, SMSC LAN91C111, memory mapped into the address
space using CS1. The Ethernet controller performs both the MAC & PHY functions and allows 10BaseT
or 100BaseT operation. This controller is clocked from a standalone 25MHz oscillator independent of the
CPU clock. The interface between the MCF5249 and the SMSC LAN91C111 is therefore asynchronous.
The Fast Ethernet controller (FEC) incorporates the following features:
Freescale Semiconductor
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Four peripheral chip-select lines for control of up to 15 devices
Baud rates from 274.5-Kbps to 17.5-Mbps at 140MHz.
Programmable delays before and after transfers
Programmable clock phase and polarity
Supports wrap-around mode for continuous transfers
Full integration and compliance with the IEEE 802.3/802.3u 100Base-TX/10Base-T physical layer
standards
Dual speed - 10/100Mbps
8Kbytes of internal Rx & Tx FIFO buffers
Burst transfers are supported
Single 25MHz operation for both the MAC & PHY
On-chip wave shaping
On-chip adaptive equaliser
Baseline wander correction
General Purpose I/O Pins
Ethernet Controller
M5249C3 User’s Manual, Rev. 1
Hardware Description and Reconfiguration
3-7