Power (VDDA & VDD) and ground (VSSA & VSS) pins on the CY7C924ADX
Question: What needs to be done with the power (VDDA & VDD) and ground (VSSA & VSS) pins on the CY7C924ADX?
All power pins should be short together and similarly all ground pins should be short together. Therefore all of the power pins should be connected to the same power plane and all grounds pins to the same ground plane as illustrated on page 57 of the datasheet. Thus there is no need to have separate planes for VDD and VDDA, and similarly for VSS and VSSA.