CAMARILLO, Calif.--Vitesse Semiconductor Corp. here today broadened its Velocity family of CMOS ICs for storage area network (SAN) equipment with three new port bypass circuits (PBCs) that integrate all digital repeaters/retimers and include the industry's first stand-alone retimer.
Compatible with Agilent Technologies' HDMP-0450, HDMP-0451, and HDMP-0452, the three new devices (VSC7124, VSC7127, and VSC7129) are designed to provide greater flexibility for manufacturers of 1.0625-gigabit-per-second disk arrays and "Bunch of Disks" (JBODs) applications, according to Vitesse.
"This family of PBCs for JBOD designs provides pin-compatible, second source products that offer significant improvements to existing products," said Tom Brokaw, senior product marketing manager in the SAN Products Group. The VSC7127 and VSC7129 are the only stand-alone retimers currently available, Brokaw noted.
The new PBCs steer serial Fibre Channel signals to disk drives, perform on-chip transmit termination, and offer low-power 3.3V operation. The VSC7124 contains five integrated PBCs whereas the VSC7127 and VSC7129 both offer six PBCs, as well as an analog/digitalsignal detect unit (SDU) and a Fibre timer clock recovery unit (CRU), which operates in either repeater or retimer modes.
The PBCs of the VSC7124, VSC7127 and VSC7129 can be cascaded together, allowing the designers to match the number of PBCs to the Fibre Channel disk drives in the enclosure, Brokaw said. If the number of disk drives exceeds twelve, Vitesse's VSC7148, with its 16 PBCs and four FibreTimers, can be utilized.
Sample and production quantities packaged in an industry standard, 44- pin 10-mm PQFP are currently available. The devices are priced below $9 each in 5,000-piece quantities.