Real-Time Ethernet Multiprotocol (REM) Switch

The fido5100 and fido5200 are real-time Ethernet, multiprotocol (REM), two-port switches. The REM switches provide customers the flexibility to select processors that best fit the application. The switches offer 10 Mbps/100 Mbps throughput and support most Layer 2 or Layer 3 protocols.

The fido5100 supports PROFINET real-time (RT) and isochronous real-time (IRT), EtherNet/IP with and without device level ring (DLR), Modbus TCP, and POWERLINK. The fido5200 supports EtherCAT and all protocols defined for the fido5100. The switches contain software drivers for each protocol. The software drivers provide an API for integration with any field device or protocol stack.

The REM switch architecture incorporates Analog Devices, Inc. PriorityChannel™ technology for efficient data transfers. Data is transferred to and from the switch using PriorityChannel queues. Thus, real-time data transfers can interrupt non-real-time data transfers to ensure timely delivery of critical data. These queues are managed by the switch driver and interface to the protocol stack to achieve the most efficient data transfers without application software involvement.

Additionally, PriorityChannel technology allows the switches to be immune to network loading effects. The REM switches automatically filter packets to prevent unwanted traffic from the processor, manage low priority traffic based on processor loading, and guarantee the timely delivery of high priority packets regardless of overall packet load.

The software drivers include a standard set of interfaces to support standard, low priority, TCP/IP communications, basic switch initialization, timer configuration, and interrupt management. This interface is common to all REM switch drivers, easing the porting of the application to each supported protocol. Each protocol has its own interface that configures the REM switch for optimal operation. This configuration is transparent to the user and can be performed at any time, including a soft-boot to change protocols without resetting the host processor or PHYs.

Applications

* Industrial automation

* Process control

* Instrumentation

* Intelligent buildings

* 2 independent Ethernet ports: 1 MII and 1 RMII interface per port

* Support for all industrial protocols

* PROFINET Class B and Class C

* EtherNet/IP, CIP Sync, and CIP Motion

* Modbus TCP

* EtherCAT

* Host interface transfer rate: 32 bits per 28 ns

* PI Net Load Class III capable

* DLR MRP

* IEEE 802.3, 10 Mbps/100 Mbps, half and full duplex, IPv6 and IPv4 communication

* IEEE 1588 Version 2 support: ordinary clock; both peer to peer and end to end transparent clocks, raw frames, and UDP