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Our first PSoC 6 lineup for the PSoC 6 MCU architecture is the PSoC 63 Connectivity line, which does not have CAN. However, the PSoC 6 MCU architecture has been built to be flexible, meaning that additional features, such as CAN and other analog and digital features can be added. We do have plans for a PSoC 6 MCU lineup that supports so stay tuned!
Thanks for the question, and let me know if you have other questions!
Is there anything about CAN that would prevent the physical layer from being implemented in PLD logic with software emulation of the higher layers?
A software implementation should be possible, I have never seen one though. You can also buy an external CAN controller IC that talks over SPI.