RJ203A Jack/Magnetics Module

The RJ203A is an "Ethernet front-end" module that contains 10/100BaseT Ethernet magnetics and a standard RJ45 jack. The module's magnetics are designed to work with Davicom's DM9000A Ethernet controller.

The unique, patent-pending design of the module minimizes its footprint and allows you to put other components required on your host board under the RJ203A, thus saving valuable host board space. Moreover, the translucent housing of the RJ203A's face enables you to place status LEDs directly on the host board and have these LEDs visible through the front face of the RJ203A.

There are two ways in which you can utilize the RJ203A in your design:

• You can interface the RJ203A to the DM9000A IC together with the CPU and other necessary components directly on your host PCB.
• Alternatively, you can use the RJ203A in combination with the EM203A Ethernet-to-serial module. These modules fit right "under" the RJ203A, thus taking (virtually) no additional space on the host PCB.