Module embeds speedy serial comms: News from MEN Mikro Elektronik

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The new M75 M-Module is designed for synchronous and asynchronous communication. The M75 is compatible with the most widely used industrial transmission standard used in the 85C30 serial communication controller (SCC). The M75 M-Module is a fast, dual-channel serial interface with a data transfer rate of up to 2Mbit/s per channel.

It uses RS422 line transceivers in full-duplex mode or RS485 line transceivers in half-duplex mode.

The two channels are optically isolated from each other and from the system.

The serial communication controller driving the M-Module is entirely implemented in an FPGA and is compatible with the widely used 85C30 device.

It supports both asynchronous and synchronous transmission, and also allows use of the SDLC protocol.

To achieve higher datarates without burdening the system with interrupts, the M75 has four asynchronous external data FIFOs.

The FIFOs have a depth of 2Kbyte in each direction and support simultaneous reading and writing.

When used in VMEbus or CompactPCI systems, the M75 supports further line levels such as RS232 or TTL at the backplane using SA adapters.

Driver software for Windows, Linux, VxWorks, QNX, RTX and OS-9 is available.

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