Stratix Ii Gx And Alt2gxb Ip

Hello,

I understand that you are using an optical receiver with a single ended output, that you want to interface with GXB transceiver input. If the other signal parameters are met (data rate, DC balanced signal, an appropriate reference clock available) this should basically work. The input parameters for GXB receiver are given in datasheet (common mode range, signal level, possible termination variants) you have to adapt the receiver modules output. It's necessary to connect both terminals of differential input, but I think, it could be driven by a single ended signal. At mimimum the unconnected pin should be bypassed to optical receiver signal ground with a capacitor.

Regards,

Frank