Forum Discussion
Altera_Forum
Honored Contributor
16 years agothe vcca pins on the cyclone III BGA pcb here are tracks on the bottom layer in fact they are a polygon fill with a wide track to the LDO. This design is using a 4 layer pcb with cyclone III SDRAM and some other stuff like 2 chanel 12 bit adc 20MSPS the components are very densed and the plane distance is 50µ and it has passes alle approvals including R&TTE
so no worry about vcca