The DMX250 Evaluation Board contains all the required firmware for operation as a DC power line transceiver, eliminating the DMX typical RS485 transceiver.
The board has a line protection network and BPF filter required for the DMX250 ASIC operation. A switching power supply provides the 3.3V required for the board operation from 10V to 36V DC power line.
At the transmitter side, the external DMX/RDM host input messages to the DMX250 device via J1 HDI pin. The message is constructed into packets, protected against errors, modulated and conducted over the power line.
At the receiver side, the received phase modulated signal from the power line
is decoded back into bitstream DMX/RDM message, output to the external host via J1 HDO.
Typical DMX250 to DMX/RDM controller interface
The figure below depicts a typical DMX250 to DMX/RDM controller interface.
Typical DMX250 to RS485 transceiver interface
When interfacing with an existing DMX/RDM module that has already built-in RS485 transceiver, an additional RS485 transceiver is required to translate the signals to Tx and Rx 3.3V logic.
The figure below depicts a typical DMX250 to RS485 transceiver interface connection.
Robust communication over DC or AC power line.
Supports DMX512 and RDM protocols.
Enables plug & play DMX & RDM solution.
On-board 10V to 36V PS for 3.3V supply.
251 selectable carrier frequencies.
Built-in error correction codes for the harsh channel conditions.
Unique powerline Arbitration capabilities for RDM discovery process.
Up to eight DMX networks sharing the same powerline.
Hard-coded 48 bit UUID.
Sleep Mode for low power consumption
Small size design.
Seamless interface to lighting DMX & RDM controllers.
A fabless semiconductor company since 1994. We develop and sell our unique devices for DC power line communication targeting wire saving. Customers in more than 51 countries use the devices in a wide range of applications; Automotive, Aerospace, Lighting, Battery monitoring (BMS) and more. The devices meet existing protocols such as UART, LIN, CAN, SPI, DMX512, and I2C keeping it simple to operate. Yamar engineers lead the LIN over DC powerline (DC-LIN) ISO 17987-8 standardization workgroup.
The innovation team continues to develop new technologies and products.