In reviewing the schematic of the dbsrx daughtercard, I noticed that
are two i2c devices (the EEPROM and the MAX211x receiver chip). In
for the daughtercards, address bit A1 determines side A or side B, and
determines if the card is an rx or tx card, and this is hard-coded by
USRP itself. So…if a user has two dbsrx cards in their USRP, I think
EEPROM of the dbsrx on side A would have the same address as the MAX211x
side B, and vice versa. Wouldn’t this be an issue?
Of course, I’m guessing there is a logical explanation as to how this is
mitigated, as I found several folks in the archives that mention using
dbsrx cards simultaneously. Any insight is appreciated.
Also, is there a reason that address bit A2 isn’t used to select
i2c devices on the same card?