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Altera_Forum
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14 years ago

How to receive slow bit stream data using GXB

Hi, Is there a way to use the GXB in Stratix IV to recover data/clock from a bit stream slower than 600Mbps? I know Xilinx transceivers can do this using oversampling. Thanks, Hua
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Altera_Forum
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14 years ago

The Stratix IV transceiver CDR is specified with a maximum run length of 200 UI. It's also clear that non-8B/10B-coded streams and DC coupling are supported. In so far, there should be a wide range of possible protocol implementations, including the said oversampling of lower bit rates than 600 MBPS.

The coding properties (run length, balancing) will still matter for the achievable performance.