Digital Crosspoint Single 4x4 8.5Gbps 36-Pin FC-BGA

The VSC3303 is a 4-port 8.5 Gbps asynchronous switch with advanced signal equalization designed for high-speed serial backplanes and cable interconnect applications. VSC3303 switches have multicast and loopback capability for great fl exibility in allocating and routing signals in a broad range of applications. The VSC3303 includes dual time constant equalization, significantly reducing jitter associated with driving multigigabit signals across backplanes and cables. Using a fully asynchronous architecture supports any data rate or protocol on any channel without the need for an external reference clock. This gives the VSC3303 wire-like interoperability in virtually any application that uses binary signaling. The VSC3303 can also be used as a buffer that simplifies and enhances the design of high-speed signal paths by providing signal equalization at both inputs and outputs to reduce or reverse signal degradation due to transmission line effects. Featuring programmable input signal equalization and output pre-emphasis, each with multiple time constants, the VSC3303 is also ideal for countering signal degradation over a wide variety of transmission media types and lengths. Typical power consumption for the device is 200 mW per active channel, and unused channels can be de-activated to save the power associated with those ports. The output drivers for the VSC3303 also feature a wide supply voltage range from 1.8 V to 3.3 V for fl exibility in matching the output swing to the application requirements. The VSC3303 has a loss of signal (LOS) detector with programmable thresholds on every input port. LOS forwarding can be enabled for each of the outputs, which will cause the outputs to be squelched in response to a LOS detect at the corresponding input, thereby propagating signal envelopes through the switch.

• 8.5 Gbps non-return-to-zero (NRZ) data bandwidth
• Fully non-blocking and multicasting switch core with per-pin signal inversion capability
• Multiple time-constant programmable input and output equalization
• Wide equalization adjustment range
• Fully asynchronous operation with