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Network interface board acts as turnkey TCP/IP interface

Posted: 21 Jul 2006     Print Version  Bookmark and Share

Keywords:NM7010A-LF  Saelig  network interface board  TCP/IP  XX 

The new NM7010A-LF module from Saelig Inc. is a 1-by-2inch Pb-free network interface board that acts as a turnkey component for quickly adding Internet connectivity to microprocessor systems. According to the company, this device avoids the burden of writing and/or running a TCP/IP software stack. It can be used as a finished component for rapidly developing Internet- enabled systems.

Hardwired stack
The NM7010A-LF is a drop-in network module based on the Rs.230.30 ($5) W3100A hardwired TCP/IP stack chip from Korea-based WIZnet USA. The company's WIZnet TCP Offload Platform has been designed into standalone DVRs, access controllers, remote-controllers, serial-to-Ethernet gateways, and network cameras, to name just a few applications.

In this application, Saelig's device includes WIZnet's W3100A chip, a RTL8201 Ethernet PHY (physical layer) device, and a MAG-JACK RJ-45 connector with transformer. The module also packs all requisite glue logic.

Offloading TCP tasks can reduce processor burden and improve overall system performance, or reduce product cost, power and size.

Up to four independent connections can be supported simultaneously, with dynamic buffer allocation for each channel. That ensures a sustained loop-back performance of 8Mbps. Notably, the NM7010A-LF offers a complete Ethernet-I2C interface. It also gives you auto-detecting 10/100 Base-T Ethernet with half/full duplex operation.

Protocol power
The NM7010A-LF supports UDP, IP, ARP, ICMP, DCHP, ARP, DLC and Ethernet media access control. It supports four independent sockets simultaneously (with dynamic buffer allocation for each channel).

With 16Kbytes of embedded data buffering, the NM7010A-LF comprises a simple socket API (application programming interface), for snag-free application programming. It also provides network status indicator support.

The NM7010A-LF is optionally available without the RJ-45 socket. It operates from 3.3V, but its I/Os are 5V-tolerant. It interfaces with standard 100mil sockets.

Applications include remote access to equipment via the Internet or LANs in industrial automation, data gathering, instrumentation, medical devices, metering and card readers.

The NM7010A-LF is priced at less than Rs.921.20 ($20).

- Alex Mendelsohn

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