Vitesse Expands ATM and SONET/SDH Physical Layers Product Line; Integration of Clock Multiplication Unit and Clock Recovery Unit in 622Mb/s and 155Mb/s ICs
September 8, 1998 08:03 AM
CAMARILLO, Calif.--(BUSINESS WIRE)--Sept. 8, 1998--Building on its expertise in the ATM/SONET/SDH arena, Vitesse Semiconductor Corp. VTSS Tuesday announced the VSC8113 and the VSC8114 PHY transceivers with 8-bit serial-to-parallel and parallel-to-serial data conversion.
These third-generation ICs integrate a Clock Multiplication Unit (CMU) for high-speed clock generation and a Clock and Data Recovery Unit (CRU), and provide SONET/SDH switches, routers, hubs and test equipment designers with ICs that are fully compatible with today's leading User Network Interface (UNI) ICs and optoelectronics modules.
Both devices provide an external CRU reference input, which allows flexibility for multiple clocking schemes used in repeater applications.
The VSC8113 provides 155Mb/s or 622Mb/s operation supporting SONET/SDH compliant physical layers. This product offers a wide range of reference clock frequencies and selectable 155Mb/s operation. The VSC8113 is for the designer who requires more versatility in a PHY IC's operation.
The VSC8114 fulfills the requirements of the majority of 622Mb/s PHY designers, with the addition of parity checking on the low-speed UNI interface. By delivering a smaller set of functions, the IC operates at a lower power than other 622Mb/s transceivers. This IC contains the same CRU and CMU of the VSC8113, but is more economical.
"Our proven track record of advancing 622Mb/s ATM PHY chips technology started in 1995 and has allowed us to develop these two ICs with even lower power dissipation, increased integration and lower cost than our previous products," stated Barry Sandefur, Vitesse director of ATM products.
"At the same time, we have taken ATM to 2.5Gb/s with Byte Interleaving transmitter and receiver chip sets, and more recently, a series of 2.5Gb/s framer ICs -- the V-FRAME 2.5 family," continued Sandefur.
"Our goal continues to be to decrease the cost and complexity of 622Mb/s and 2.5Gb/s ATM PHYs and help the high-end ATM market more rapidly expand to meet accelerating WAN and LAN communications needs," concluded Sandefur.
The VSC8113 and VSC8114 perform SONET/SDH frame recovery and provide lock detection for both the CRU and CMU. The facility and equipment loopback modes contained in both these ICs allow for easy system level diagnostic testing.
Both ICs contain +3.3V/5V programmable I/Os which enable direct-coupled interface to +5V optical modules, eliminating additional component requirements and reducing board space requirements. A reference design board is available for customers to assist in system design and shorten time to market.
Packaged in a low-cost 100 pin PQFP, production quantities of the VSC8113 and VSC8114 are available now. In quantities of 1,000, pricing for the VSC8113 is $40 and for the VSC8114 is $35.
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