In package 64-TFBGA, you will find the ICs.A package named Tray contains integrated circuit.A mounting method of Surface Mount is used.Basically, integrated circuit is a DDR SDRAM Multiplexer.The family ICS83840 contains similar integrated circuit systems.
ICS83840BHLF Features
ICS83840BHLF Applications
There are a lot of Renesas Electronics America Inc. ICS83840BHLF Specialized ICs applications.