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The PCI spec probably makes slightly easier bedtime reading!
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The PCIe spec is $3500.
http://www.pcisig.com/specifications/order_form I doubt it is worth reading though. It'll be mostly about electrical and PHY layers that are taken care of by the Altera IP.
The specifications worth reading are the ones related to the physical form factor you are putting the card into, eg., Compact PCIe (or whatever they call it), AdvancedTCA, AdvancedMC, etc. Those specifications are about $100 to $400 each from PICMG.
https://www.picmg.org/v2internal/specorderformsec-nonmember.htm But you can also become an affliate member for $1000 and you get everything (a stack of specifications about a foot high).
That's my recommended bedtime reading :)
Cheers,
Dave
Honored Contributor
