havnt read abt this ic yet, but i hav made a energy meter using analog devices ic ADE7757 interfacing it with 89C51. the ic provides the digital form of the current power consumption. u hav to count the frequency in a calibrated time. and rest of the part is done in uC.
I also same like awalanchal.Anyhave I worked with CS5460.In CS5460 have SPI(Serial Peripheral Interface) compatiblity.I think CS5463 also same so try with SPI...