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Altera_Forum's avatar
Altera_Forum
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8 years ago

simple SPI on MAX V - what's wrong here?

Hi, in a project I want to use MAX V (precisely: 5M40ZE64I5N) operating as a slave on SPI bus, so I've started to prepare a very simple module for communication over SPI bus. My device uses 5 l...
Altera_Forum's avatar
Altera_Forum
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8 years ago

I've had a look at the logic element used for toggling the output and I wonder if the drawing is accurate, i.e. the connections which are shown are to be taken seriously, or is it "just a drawing". The configured LE looks like this:

https://www.alteraforum.com/forum/attachment.php?attachmentid=14159

My question relates to the connections shown inside the "rectangle on the left", which, if I understand correctly, is the lookup table. If these connections represent anything physical, then DATAD input cannot reach the flipflop.