a bridge between apb and i2cslave?

need the bridge description of apb master to i2c slave apb works at 6 mhz and send 32 bits parallel data i2c works at 3mhz and receives the 8 bit serial data what wil be the decoder logic between bridge and i2c interface"? bridge wil work at wat frequency? i chosen bridge as asynchronous dual port fifo?
Detail pl.