Hello,
We have EEPROM interface on our DM8168 board which same as UD works(Rev 0.6) As per reference design it is AT93C46-10SU-2.7 and we are using similar of that(i.e.AT93C46DN-SH-B), Both are similar except Self-timed Write Cycle difference of 10 ms max and 5 ms max respectively. and here i have some doubt over this interface, Which are :
1) what is the main purpose of EEPROM?
2) It is required EEPROM to be flashed, If yes then how?
3) Till now i have not done and flashing over this, and Currently i have lifted up Data out pin (4th pin of IC) and loading file system.Because without lifting up that pin after u-boot load,filesystem reading/copying to the ram and hangs system no further progress. After debugging we found the problem that, it is waiting for eeprom response so we had lifted up data out pin.
Thanks in Advance!
Regards,
Pragnesh Virani