#apertus IRC Channel Logs

apurvanandan[m]: in 10 bit, 1BC starts with a '0' and ends with two '0' so there is little chance that a '1' can sneak in because of bad alignment

off to bed now ... have a good one everyone!

morning folks!

Bertl: I know exactly which module is not working, and now I am trying to find the problem in it. The sampling in DDR at very first step is going wrong, after that whatever data is received is decoded accordingly and sent ie rest of codes does it job fine, only DDR X4 needs to be fixed

so what is going wrong there?

That is the update delay control code

I am making that again, because earlier I trusted IPexpress of Diamond to make that for me

anyway, it is probably a good idea to write it yourself

I highly doubt it is useless : https://github.com/apurvanandan1997/BER_measurement/blob/master/MachXO2/Receiver/rx_sync.vhd

well, I'm not sure how you will compensate PVT variation if you cannot adjust the delay?

https://ibb.co/sQnnkmY

So it takes uddcntln signal which 'holds/updates control to delay code before adjustment' as written in documentation (not clear exactly)

you are aware that those are all elements used for DDR memory access and control

so they might not always do what you expect with serial transmissions

What procedure do you suggest as an alternative?

as we discussed a long time ago

Ok If it doesn't works I will switch to the plain method

thanks, should be no problem at all

I'm about to run on beta within an hour

currently generating the bitstream files

is the " dark box Beta" include the Beta_e ?

separate unit

yep

OK thanks Bertl :)

aSobhy: how is the Beta testing going?

I get stuck in bits map and apurvanandan[m] helped me

yeah, that's a prominent misconception :)

what do you mean?

what 'address'?

what 'memory'?

yes

as I mentioned a few times before, if you want to output debug information from the MachXO2, you need to either do it via the PIC or via dedicated LVDS lines to the Zynq

For how long I mean

how long should that take? at most N cycles where N is the number of bits

so you need to use some kind of serial protocol

I apologize for miss understanding as I didn't slept well for days :/

no problem