Can anyone tell me what the M24C02-RMN6TP (i.e component U2 on the FMCDAQ2 schematic) device is used for on the FMCDAQ2 design? Is this chip intended for Analog Device's use only in that maybe it holds important configuration information? I see that the EEPROM chip is not write-protected because the JP3 is populated with a 0 Ohm resistor. Would there likely be any issue with board operation if we were to depopulate JP3 so that this device is switched to write-protected?
Moved to FPGA Reference Design community.
Hi,Its purpose is described at the beginning of https://wiki.analog.com/resources/eval/user-guides/ad-fmcomms1-ebz/software/linux/applications/fru_dump.
Thie EEPROM is vital if you are using a carrier from the Xilinx Ultrascale family. The carrier will read information about the voltage requirements from that EEPROM.
For example, if the memory is empty the carrier will not powerup the VADJ...
Thank you, Andrei! Exactly what I was looking for....
Andrei, does your SW or reference design write anything to the EEPROM? If not, then it should be safe to remove the /WC pin's resistor in order to write-protect the component?
Thank you for the assistance!
Hi,The software doesn't write anything on its own to it. You can safely do that.Andrei