EM120 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – Ethernet-to-serial Module

EM120 Ethernet-to-serial Module
The EM120 is an Ethernet Module for onboard installation. Module hardware includes
one 10BaseT Ethernet port (standard Ethernet magnetics are NOT integrated into
the Module), one serial port (CMOS-level) with a number of additional general-
purpose I/O lines, and an internal processor, whose firmware acts as a bridge
between the Ethernet and serial ports. Ethernet "side" of the Module connects
directly to a standard Ethernet magnetics circuit (such as YCL-20F001N) or RJ45
connector with integrated magnetics. Serial "side" interfaces directly to the serial
port pins of most microcontrollers, microprocessors, UARTs, etc.
From the hardware standpoint, the EM120 can be viewed as a universal platform
suitable for running a variety of network and serial communications-related
applications. It is the application firmware, not hardware that gives the EM120 most
of its functionality.
The Application firmware EM120 is supplied with, currently in its 3rd generation
("Release3"), turns the EM120 into a Serial Device Server used to connect serial
devices to the Ethernet (TCP/IP) networks.
The application firmware of the EM120 can be upgraded through the module's serial
port or Ethernet port. Serial upgrades are facilitated by a so-called Monitor- a fixed
"service" firmware inside the EM120. The Monitor cannot be upgraded. Network
upgrades rely on the application firmware itself- there is a self upgrade algorithm
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