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Mikhail_a's avatar
Mikhail_a
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2 years ago

RVALID is high after reset on Agilex 7 M-series F2H bridge

Hello I work with Agilex 7 M-series device and I see a strange behavior of F2H bridge. I see that after deasserting f2h rst_n RVALID and BVALID signal go high, also I see some data coming from RDATA...
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Mikhail_a's avatar
Mikhail_a
Icon for Occasional Contributor rankOccasional Contributor
1 year ago

Some update

I've upgraded Quartus to 24.1, upgraded u-boot fsbl to 2023.10

and now I see that RVALID signal is low after reset, but It looks like ARLEN signal is not connected to where it should be. So on any read request the bridge returns only one transfer of data with RLAST high irrespective to any ARLEN I send. It looks like ARLEN is always zero right now.