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Echelard's avatar
Echelard
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5 years ago

Transceiver word Alignment / dual channel in Cyclone V

Hi I'm using transceivers to transfert 32 bits from a cyclone V to a cyclone IV Parralel clock is set to 100MHz, and I use 2Gbps with 2 transceiver channels to send data. Currently, to test, I se...
Echelard's avatar
Echelard
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5 years ago

Hi,

Thanks for the feedback,

So I will move to manual mode instead of automatic for the word alignment, beginning by CH0 first and CH1 after.
I will post my result here .

Echelard's avatar
Echelard
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5 years ago

Hi,
I moved to manual alignment, using the the internal loopback of the transceiver for test.

The TX send K28.5 D16.2 / K28.5 D17.2 / K28.5 D18.2 on the channel 0 and the same pattern on the channel 1 after.
I start the alignment on the channel 0 and wait for the syncstatus change.
Expected value on receiver will be (in hexa) 0xBC50 - 0xBC51 - 0xBC52.
But I observe something different, I receive 0xBC50 - 0xBC53 - 0xBC50, even if the syncstatus is asserted.
I've no problem with the 2nd channel (data on 31-16).


Thanks for your help.