MikroElektronika

mikroETH™

Manual

All Mikroelektronika’s development systems feature a large number of peripheral modules expanding microcontroller’s range of application and making the process of program testing easier. In addition to these modules, it is also possible to use numerous additional modules linked to the development system through the I/O port connectors. Some of these additional modules can operate as stand-alone devices without being connected to the microcontroller.

Addi

tiona

l Boa

rd

MikroElektronika

mikroETH Additional BoardThe mikroETH additional board is used to connect a microcontroller to Ethernet network. mikroETH is connected to the development system via a proto board, but it can also be directly connected to the microcontroller provided in some device. The mikroETH board features three connectors. Two male 1x5 connectors are used for connection with the proto board or a device, while the RJ45 connector is used for connection with Ethernet network.

Communication between the microcontroller and Ethernet network is established via the ENC28J60 ethernet controller provided on the mikroETH board. This controller enables data to be transferred from Ethernet network to the microcontroller and vice versa using serial SPI communication. In Figure 4, the mikroETH board is connected to the microcontroller via the SPI communication module built into the microcontroller.

LEDAGND

VCCVCAP

LEDBCLKOUT

OSC-VCCINT

OSC2WOL

OSC-GNDSI

PLL-GND

PLL-VCC

RX-VCC

TX-GND

TPOUT+

TPOUT-

TX-VCC

SCK

CS

RESET

GND-RX

TPIN-

TPIN+

RBIAS

OSC1SO

E210uF

INT#

CS#

RST

#MISO

INT#

MOSI

SCK

MISOMOSISCKCN1

1

10 CS#RST#

U1

R3

2K2 R4

2K2

ENC28J60

VCC

VCC

VCC

FP1

RJ45

TD+

CN3

A2A2

K2

A1A1

K1

CTTD-

RD+CTRD-

R551

R651

R751

R851

C310nF

C410nF

X125MHz

C1

22pF

C2

22pF

R21K2

R1

1K2

R12R10R11R13

4x100R

C5

100nF

VCC

C6

100nF

VCC

C7

100nF

VCC

LD1 LD2

Figure 4: Additional board mikroETH connection schematic

Figure 1: mikroETH additional board

19,2

5mm

42,53mm

Figure 3: mikroETH connected to a ethernet cableFigure 2: mikroETH board’s dimensions

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