Lattice has extended its family of high-speed serial backplane devices with the ORSO82G5 devices. Built on the Series 4 reconfigurable embedded System-on-a-Chip (SoC) architecture, the ORSO82G5 is high-speed transceivers with aggregate bandwidths of over 10 Gbps and 20 Gbps respectively. These devices are targeted toward users needing high-speed backplane interfaces for SONET and other non-SONET applications. The ORSO82G5 has eight channels of integrated 0.6-2.7Gbps SERDES channels with built-in Clock and Data Recovery (CDR), along with more than 400K usable FPGA system gates. The CDR circuitry, available from Lattice’s high-speed I/O portfolio (sysHSI™), has already been used in numerous applications to create STS-48/STM-16 and STS-192/STM-64 SONET/SDH interfaces.With the addition of protocol and access logic, such as framers and Packet-over-SONET (PoS) interfaces, design-ers can build a configurable interface using proven backplane driver/receiver technology. Designers can also use the device to drive high-speed data transfer across buses within a system that are not SONET/SDH based. The ORSO82G5 can also be used to provide a full 10 Gbps backplane data connection and, with the ORSO82G5, support both work and protection connections between a line card and switch fabric.
The ORSO82G5 support a clockless high-speed interface for interdevice communication on a board or across a backplane. The built-in clock recovery of the ORSO82G5 allows higher system performance, easier-to-design clock domains in a multiboard system and fewer signals on the backplane. Network designers will benefit from using the backplane transceiver as a network termination device. Sister devices, the ORT42G5 and the ORT82G5, support 8b/10b encoding/decoding and link state machines for 10 Gbit Ethernet(XAUI) and Fibre Channel. The ORSO82G5 perform SONET data scrambling/descrambling, streamlined SONET framing, limited Transport OverHead (TOH) handling, plus the programmable logic to termi-nate the network into proprietary systems. The cell processing feature in the ORSO82G5 makes them ideal for interfacing devices with any proprietary data format across a high-speed backplane. For non-SONET applications, all SONET functionality is hidden from the user and no prior networking knowledge is required. The ORSO42G5 and ORSO82G5 are completely pin-compatible with the ORT42G5 and ORT82G5 devices.
