In the meantime some things to correct were found in first revision of SPI adapter.

- QFN is annoying to hand solder. TQFP package was selected, there is enough space on PCB

- changed magjacks to cheaper ones

- EEPROM  switched from THT in socket to SMD package: less bulky, cheaper. Swapping chip from board bricked by bad config was never needed. No matter how bad was configuration, new one could be upload over EtherCAT every time.

IBOM can be found here

Design is ready to order and test, but due to performance benchmark results different approach was selected