VSC3040

·11 Gbps 144 × 144 strictly nonblocking switch matrix with multicast and output striping programming modes
·Input signal equalization (ISE) with programmable control globally or on a per-channel basis
·Adjustable output pre-emphasis EQ
·Differential current mode logic (CML) data output driver
·Protocol-independent switching and data transmission
·45 mm × 45 mm, 1.27 mm pin pitch, 1072-pin BGA package
·Parallel and serial programming modes for configuration and monitoring
·Software control to optimize power dissipation

·High-definition digital broadcast video systems
·Multi-service provisioning platforms (MSPPs)
·Mixed TDM/packet switching systems
·High-speed storage, Ethernet, and networking equipment
·DWDM switching systems
·High-speed automated test equipment

The VSC3040 device is an asynchronous crosspoint switch designed to carry broadband data streams in a variety of storage, video, and networking equiqment applications. Combining the 11 Gbps per port bandwidth and 144 * 144 switch matrix enables a breakthrough 1.5 Tbps capacity in a single device.

The VSC3040 fully non-blocking switch core is programmed using a multimode port interface that allows random access programming of each I/O port. Each VSC3040 data output can be programmed to connect to any of its inputs. The signal path through the device is fully asynchronous, eliminating restrictions on the phase, frequency, or signal pattern of any input.

The VSC3040 also integrates the Vitesse best-in-class signal integrity and EQ technology. A high degree of signal integrity is maintained throughout the device because each high-speed output is a fully differential, switched-current driver with on-die terminations. Data inputs are terminated on-die, using 100 resistors between true and complement inputs with a common connection to an internal bias source, which facilitates AC-coupling to the switch inputs.

Core programming for the VSC3040 device can be sequential on a port-by-port basis, or multiple program assignments can be queued and issued simultaneously. The entire device can be initialized for straight-through, multicast, or other configurations. Unused channels can be powered down to allow efficient use of the switch-in applications that require only a subset of the available I/O channels. Power-down is enabled in the software by programming individual unused outputs with a power-down code.