HD3SS3212: Use HD3SS3212 to switch Aurora

Hi Lioz,

Could you give more detail on the signal characteristics? This device can pass 10Gbps so the signal speed is ok, but there are a few other considerations to make:

- Is the signal single ended or differential? The 3212 is designed for differential signals and may not be a good solution for single ended.

- What common mode voltage would the signal have? The 3212 can support common mode voltages from 0 to 2V.

- What is the amplitude of the signal? The 3212 can support up to 1.8V differential Vpp

Best,

Shane

signal definition by Xlinx

The Aurora 8B/10B protocol uses differential signaling between ports. This section
specifies signals using peak-to-peak differential voltages. . Each signal swings between A volts and B volts. Using these waveforms, the
definitions are as follows:
1. The transmitter or receiver has a peak-to-peak range of A - B
2. The differential signal ranges from +|A−B| to -|A-B|
3. The differential peak-to-peak signal is 2 * (A−B)

Peak-to-peak is the difference between the most positive and the most negative
readings of a particular signal. In this case (A−B) −(−(A−B)) = 2*(A−B).
To illustrate this concept using real values, consider the case where a current mode logic
(CML) transmitter has a termination voltage of 2.5V and has a swing between 2.5V and
2.0V. Using these values, the peak-to-peak range is 500 mV. The differential signal ranges
between 500 mV and -500 mV. The peak differential signal is 500 mV. The differential peakto-
peak signal is 1000 mV.