17
UNI-DS3 Development System
MikroElektronika
page
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The
UNI-DS3
development system is provided with an ethernet module. Its function is to provide an interface between the microcontroller
and LAN (local area network). A stand-alone controller ENC28J60 enables ethernet communication on the development system.
This circuit is used to transfer data from LAN to the microcontroller using serial communication.The 3.3V voltage is required for
the operation of this circuit. To enable data to be transferred to the microcontroller powered with the 5V power supply voltage, it is
necessary to adjust these voltage levels by means of the 74HCT245 transciever. Jumpers J12, J13 and J14 are used for selecting
voltage levels. In case that MCU card with the microcontroller requiring the 5V power supply for its operation is used, it is necessary
to set jumpers J12, J13 and J14 to the 5V position. In case the microcontroller requiring the 3.3V power supply for its operation is
used, it is necessary to set jumpers J12, J13 and J14 to the 3.3V position. To enable connection between the ethernet module and
the microcontroller, switches 2, 3, 4 and 5 on the DIP switch SW2, as well as switches 4, 5 and 6 on the DIP switch SW4 must be set
to the ON position.
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: Ethernet module connection schematic
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: Ethernet module
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: Ethernet connector
Ethernet module connector
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