EM203 Ethernet Module0 pages

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Features
10/100BaseT Ethernet port
Four LEDs onboard
One TTL serial port
Compact (30.1x18.1x12.5mm)
Mates with RJ203 jack/magnetics
About
The EM203 is a miniature serial-to-Ethernet module. In combination with the RJ203 jack/magnetics, the EM203
occupies only 31x19mm of board space. Alternatively, the EM203 can be used with any suitable magnetics and
jack.
The EM203 is offered with Tibbo Device Server Toolkit software, which includes Virtual Serial Port Driver for
Windows and Linux.
The EM203 can also be supplied (loaded) with TiOS fi rmware and work as a simple BASIC-programmable
controller. The module can be ordered standalone or in combination with the RJ203.
Not available in the U.S.
Specifications
10/100BaseT, auto-MDIX Ethernet port
(no magnetics):
EM203: based on the DM9000B controller IC;
EM203A: based on the DM9000EP controller IC.
TTL serial port (TX, RX, RTS, CTS, DTR, and DSR
lines).
Four status LEDs onboard.
Two control lines for green and red status LEDs.
Can be used with RJ203 (EM203) and RJ203A
(EM203A) modules.
Power: 220mA @ 5V.
Dimensions: 30.1x18.1x5.5mm.
Firmware is upgradeable through the serial port or
network.
Serial-over-IP Firmware
Full- and half-duplex serial port modes.
Server, client, and server/client network (“routing”)
modes.
8KB data buffers (one in each direction).
Confi guration stored in the EEPROM.
Detailed status indication status indication via
LEDs.
Setup through the serial port or network (UDP,
Telnet).
Remote control of RTS, CTS, DTR, and DSR lines.
“On-the-fl y” commands for immediate serial port
confi guration.