Crosspoint switch boosts signal integrity

Camarillo, Calif. — Vitesse Semiconductor Corp. unleashed a 12-port crosspoint switch with enhanced signal equalization technology that it says will raise the bar in terms of signal integrity performance and flexibility.

Vitesse's VSC3312 is a 12-port crosspoint switch for transmitting multi-gigabit data signals across printed circuit boards, through backplane connectors and over copper cabling used in networking and storage systems.

The VSC3312 is the first device in an upcoming family of products operating from DC up to 11 Gbits/s. The switches feature Vitesse's unique PixEQ technology that advances high-speed signal integrity performance. Implementing the only dual time constant programmable input signal equalization and output signal pre-emphasis, the VSC3312 compensates for multiple impairments in a signal path, said Juan Garza, Vitesse's product marketing manager.

Vitesse's PixEQ equalization capability works independently of the data rate, providing highly effective compensation for deterministic jitter across a wide range of operating conditions without requiring re-tuning, Garza said. In addition, the VSC3312 operates on a single 2.5-volt supply, with a typical per-channel power dissipation of 160 milliwatts.

Click here for more details on Vitesse's PixEQ technology .

The VSC3312 is the first crosspoint switch capable of detecting and transmitting loss of signal (LOS) — allowing native out-of-band (OOB) support of Serial Attached SCSI (SAS)/ Serial ATA (SATA) storage protocols, according to Garza. The VSC3312 crosspoint switch supports a wide frequency range and the following data protocols: GbE, XAUI, 2X XAUI, SAS, SATA, Fibre Channel and InfiniBand .

The re-configurable input/output (I/O) capability of this product family allows ports to operate as either an input or output for a total of nine different I/O combinations from 8:16 to 16:8.

See related diagram

The VSC3312 is sampling now with production slated for mid year. It comes in a 15 x 15-mm, 196-pin PBGA package. Volume pricing will be $36 per unit. Click here for the VSC3312 data sheet.

Vitesse Semiconductor , 1-800-848-3773,

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