Byte pin is used to provide the organisation structure ( like 2M X 8 or 1M x 16). In TSOP package a Byte pin is there to provide this info but for CY62167EV30LL-45BVXI of the VFBGA package it can only be used as 1M X 16 part. If you want to use the memory as 2M X 8 organisation in VFBGA package then you have to go with CY62168EV30LL-45BVXI. Please find the datasheet link below
Thank you for your prompt reply!!!
It all makes sense now.
Thank you for the clarification.