New chips target SONET/SDH

West Bay Semiconductor has introduced the WB1400 and the WB1510, two standard product channelised framers and pointer processors targeting SONET/SDH Metropolitan Access telecommunications equipment designers.

Target applications for the new devices include Digital Cross-Connects and Multi Service Provisioning Platforms (MSPPs), as well as Broadband Aggregator and Add-Drop Multiplexer equipment used to aggregate end user traffic transmitted over T1/E1/J1/DS3, wireless, DSL and other transmission pipes, into high speed network connections.

The WB1400 is a single chip 4 x OC-3/STM-1 or 1 x OC-12/STM-4 SONET/SDH fully channelised framer and pointer processor. The device enables equipment makers to design a single card for all OC-12/STM-4 aggregate bandwidth applications. The flexibility of such a card can be further enhanced by using Standard Form-Factor Pluggable (SFP) optical Transceivers, or by using multi rate optics.

In addition, the WB1400 has a triple-redundant system side interface and cross connect that enables connections to multiple devices or cards, such as tributary interfaces at the DS1/E1/DS3/E3 or OC-3/STM-1 rates. In the OC-3/STM-1 mode, the WB1400 incorporates on-chip Clock and Data Recovery (CDR).

The WB1510 is claimed to be the industry’s first single chip 2 x OC-12/STM-4 or 2 x OC-3/STM-1 SONET/SDH fully channelised framer and pointer processor. The device offers equipment makers the flexibility to design 2-fibre line interfaces for ring applications, using a single chip. The 2 x OC-3/STM-1 mode enables systems engineers to design a single line interface card for both OC-12/STM-4 and OC-3/STM-1 rates. In the OC-3/STM-1 mode, the WB1510 includes built-in Clock and Data Recovery (CDR).

The WB1400 and WB1510, as well as West Bay’s existing WB1501 (16 x OC-3/STM-1 with CDR) and WB1500 (1 x OC-48/STM-16 or 4 x OC-12/STM-4) channelised framers are pin to pin and software compatible. This compatibility enhances equipment manufacturer productivity, and reduces the design time of new 622 Mbit/sec and 2.5 Gbit/sec total bandwidth system architectures by enabling system designers to develop a single board with different stuffing options applicable for a range of line interface connections.

The WB1400 and WB1510 are implemented in a standard 0.25 micron CMOS process, and operate across the industrial temperature range of -40 degrees Celsius to 85 degrees Celsius.

They are packaged in 35 mm x 35 mm, 648 pin PBGAs, and are priced at USD$130 for the WB1400, and at USD$165 for the WB1510 in 10K volume quantities. Samples will be available in January 2003. Support packages complete the product offerings. These include a reference design, C language device drivers, IBIS and BSDL models, a long form datasheet and application notes.